Hello
I have written an Apex Batch schedulable class that runs a method from another class everyday at a certain time. What this batch class does is see all the accounts that have a field "Email Sent__c" as true and if it is true, it will pass those clients to the execute function so that it runs a method from a different class. this method basically generates an email and sends it. Once the email is sent, it updates the field Email_Sent__c to false. Everything works great and now in order to deploy it, I am writing some test classes. The problem is that the test class I have written for the Batch Apex only shows 50% coverage. Can someone please let me know why this is only 50% and what I can do to fix it? Also, I dont think the system.assert calls are checking the email_sent values after the update, they are only taking the values from the test setup method

Here is the Batch Apex class I wrote:
global class ConfirmationCardBatchApex implements Database.Batchable<sObject>, Database.Stateful {
    global Database.QueryLocator start(Database.BatchableContext BC) {
        Datetime clientReleasedDate = Datetime.now().addHours(-24);
       
        return Database.getQueryLocator(
            'SELECT Id, Client_Released__c, Client_Number__c, Release_Date__c, ' +
            'Email_Sent__c FROM Account ' + 
            'WHERE Email_Sent__c = true AND Client_Released__c = true AND Release_Date__c<=:clientReleasedDate'     
        );


    }
    global void execute( Database.BatchableContext BC, List<Account> scope){
        List<String> acctIdList = new List<String>();
        for(Account account : scope){
                acctIdList.add(account.Id);
                   
        }       
        LM_ChangeAccountRT.resendEmails(acctIdList); 
    }    
    
    global void finish(Database.BatchableContext bc){
        System.debug( 'finish: called' );
    }  

}

The test class I wrote is the following (I am sure it has alot of mistakes. what can i do to get 100% coverage?)
@isTest
public class TestConfirmationCardBatchApex {
    static Account client;
    static Account client1;
    static Account client2;
    static Account parentC;
    static Contact con;
   
    @testSetup
Contact cont1 = new Contact(LastName='ContTest1', Email='test1contact@libertymutual.com', CommunicationType__c ='Holiday card', recordTypeId = Schema.SObjectType.contact.getRecordTypeInfosByName().get('Business Development Manager').getRecordTypeId(),FirstName= 'Contact');
        insert cont1;
        
        id tempuser = [Select id from User where LastName='Testing' limit 1].id;
        system.debug('11111'+tempuser);
        parentC = TestDataUtils.createAccountFromRecordType(Schema.SObjectType.Account.getRecordTypeInfosByName().get('Referral Program - Participant Form').getRecordTypeId());
        parentC.Dealership_Partner__c = 'BMW';
        parentC.Dealership_State__c='WA';
        parentC.Name = 'Parent Name';
        parentC.Client_Number__c = '12302.0';
        parentC.Business_Development_Manager__c=cont1.id;
        insert parentC;

client1 = TestDataUTils.createAccountFromRecordType(Schema.SObjectType.Account.getRecordTypeInfosByName().get('Referral Program - Participant Form').getRecordTypeId());
        client1.Name = 'Test Client 2';
        client1.Business_Development_Manager__c=cont1.id;
        client1.Branch_Manager__c = tempuser;
        client1.Dealership_Partner__c = 'BMW';
        client1.Dealership_State__c= 'TX';
        client1.ParentID = parentC.Id;
        client1.Client_Number__c = '12322.0';
        client1.Email_Sent__c = true;
        client1.Client_Released__c = true;
        accountdata.add(client1);
        
        client2 = TestDataUTils.createAccountFromRecordType(Schema.SObjectType.Account.getRecordTypeInfosByName().get('Referral Program - Participant Form').getRecordTypeId());
        client2.Name = 'Test Client 3';
        client2.Business_Development_Manager__c=cont1.id;
        client2.Branch_Manager__c = tempuser;
        client2.Dealership_Partner__c = 'BMW';
        client2.Dealership_State__c= 'CA';
        client2.ParentID = parentC.Id;
        client2.Client_Number__c = '12332.0';
        client2.Email_Sent__c = true;
        client2.Client_Released__c = true;
        accountdata.add(client2);
        insert accountdata;
static testmethod void test() { 
        Test.startTest();
        ConfirmationCardBatchApex confirm = new ConfirmationCardBatchApex();
        Id batchId = Database.executeBatch(confirm);
        Account emailTest = [SELECT Id, Name, Client_Released__c, Client_Number__c, Release_Date__c, Email_Sent__c FROM Account WHERE Name IN ('ContTest1', 'Test Client 1', 'Test Client 2') AND Email_Sent__c = true];
        Test.stopTest();
        System.assertEquals(true, emailTest.Email_Sent__c, 'Expected value should be true');  // After method is run, the email_sent__c should be false but it only shows success when I assert it to true.
    }

}

In case you are wondering what this resendemails method is(in the LM_CHANGEACCOUNTRT Class), here is a snippet of it:
@AuraEnabled
    public static String resendEmails(List<String> accountIdList) {
        String response = null;
        try {
            //Only send emails if user is either an ARMS Administor or System Administrator
            if (System.label.ARMS_Administrator_Profile_Id == userinfo.getProfileId() || 
                sysAdmin.Id == userinfo.getProfileId()) {
                List<Account> accList = [SELECT Id,FCA_Dealership__c,Branch_Manager__c,Business_Development_Manager__c,Client_Released__c,Existing_Participant__c,
                                         Dealership_Partner__c,Dealership_State__c,RecordTypeId,owner.email,owner.Supervisor_Email__c,Client_Number__c,Closing_Manager__r.name,
                                         Name,Completed_Date__c,Effective_Date__c,Closing_Manager__c,Is_the_client_receiving_compensation__c,Is_a_broker_receiving_compensation__c,Broker__r.name,
                                        ,Broker__r.State__c, Email_Sent__c,
                                         FROM Account
                                         WHERE Id IN:accountIdList];
                
                for(Account acc: accList){
                    if (acc.Client_Number__c != null && acc.Client_Released__c && acc.Email_Sent__c == true) {
                        sendpdfgenerationEmails(acc); 
                        acc.Email_Sent__c = false; 
                        
                        response = 'Email Sent';
                    }else {
                        response= 'Access Denied';
                    }
                }
                    
                    update accList;
            }  
        }catch(Exception e) {
            System.debug(e.getMessage());
            response = 'Error sending emails';
        }
        return response;
    }//what this method does is call the sendpdfgeneration method which is the method that generates and sends a custom email. After calling the methid, the email_sent__c field is updated to false

Any help in fixing my test method would be great;y appreciated. Thank you