Hi there,
I am getting a code coverage failure warning. I'm not a developer, so I don't know where I went wrong? Thank you for your help.

1. I created an Apex Trigger and Apex Test Class
2. I attempted to deploy the change set and received:

Error: Code Coverage Failure
Your organization's code coverage is 0%. You need at least 75% coverage to complete this deployment. Also, the following triggers have 0% code coverage. Each trigger must have at least 1% code coverage.

Apex Trigger
trigger FeedCommentUpdatetoNetPlanning on FeedComment (after insert) 
{
    Id profileId = UserInfo.getProfileId();
    String profileName =[Select Id, Name from Profile where Id=:profileId].Name;
    Set<id> SalesEngineeringSet = new Set<Id>();
    List<SALES_ENGINEERING_REQUEST__c> serList = new List<SALES_ENGINEERING_REQUEST__c>();
    for(FeedComment f : Trigger.New)
    {
        if(profileName  == 'GeoLinks Net Planning')
        {
            SalesEngineeringSet.add(f.ParentId);
        }          
    }
    
    if(!SalesEngineeringSet.IsEmpty()){
        for(SALES_ENGINEERING_REQUEST__c ser : [SELECT ID,Status__c FROM SALES_ENGINEERING_REQUEST__c WHERE ID In: SalesEngineeringSet]){
            if(ser.Status__c != 'Approved' && ser.Status__c != 'Unable to Meet Request'){
                ser.Status__c = 'Awaiting Reply from Rep';
                serList.add(ser);
            }
        }
    }
    
    if(!serList.IsEmpty())
        update serList;
}

Test Class
@isTest
public class FeedCommentUpdatetoNetPlanning {
    
    @isTest
    public static void testFeedCommentUpdatetoNetPlanning() {
        
        //Create a User with Profile 'Net Planning Department'
        Id pid = [Select Id FROM Profile WHERE Name = 'Net Planning Department'].Id;
        
        User u = new User();
        u.ProfileId = pid;
        //here fill all the required fields for the User Record
        insert u;
        
        SALES_ENGINEERING_REQUEST__c s = new SALES_ENGINEERING_REQUEST__c();
        s.Status__c = //any Value othe than "Approved" and "Unable to Meet Request"
        //here fill all the required fields for the SALES_ENGINEERING_REQUEST__c Record
        s.Name = 'Test SER 1';
        s.Layer__c = 'Layer 2';
        
        //Since test class runs in the current user mode and in this Trigger lines will be covered only when the    //User has a Profile - 'Net Planning Department' hence we need trigger this event as the new User created with this //Profile
        System.runAs(u) {
            FeedComment f = new FeedComment();
            //here fill all the required fields for FeedCommentRecord
            
            Test.startTest();
            insert f;
            Test.stopTest();
        }
        
        
        SALES_ENGINEERING_REQUEST__c updatedRecord = [SELECT Id,Status__c  FROM SALES_ENGINEERING_REQUEST__c WHERE Id =: s.Id];
        System.assertequals('Approved',updatedRecord.Status__c);
    }
    
}