AccountTrigger.trigger

trigger AccountTrigger on Account(before insert, before update, before delete, after insert, after update, after delete, after undelete) {

    new AccountTriggerHandler.execute();
    
}

AccountTriggerHandler.cls

public class AccountTriggerHandler extends TriggerHandler {
    
    protected override void executeBeforeInsert(List<Sobject> newRecords) {
        List<Account> newAccounts = (List<Account>)newRecords;
        
        for(Account account : newAccounts) {
            // Call some private methods here for each record
            this.runSomeMethod(account);  
        }
        
        // Or you can call methods that accepts a list instead
        this.runSomeBulkMethod(newAccounts);
    }
    
    private void runSomeMethod(Account account) {
        // Add some logic here   
    }
    
    private void runSomeBulkMethod(List<Account> accounts) {
        // Add some logic here   
    }
    
}

TriggerHandler.cls

/******************************************************************************************************
* This file is part of the Simple Trigger handler project, released under the MIT License.            *
* See LICENSE file or go to https://github.com/jongpie/SimpleTriggerHandler for full license details. *
******************************************************************************************************/
public abstract class TriggerHandler {

    public void execute() {
        System.debug('Starting handler execution. Current class is: ' + this.getClassName());
           
        // Dont execute if custom setting has disabled triggers
        if(this.isDisabled()) return;
            
        switch on Trigger.operationType {
            when BEFORE_INSERT  { this.executeBeforeInsert(Trigger.new); }
            when BEFORE_UPDATE  { this.executeBeforeUpdate(Trigger.new, Trigger.newMap, Trigger.old, Trigger.oldMap); }
            when BEFORE_DELETE  { this.executeBeforeDelete(Trigger.old, Trigger.oldMap); }
            when AFTER_INSERT   { this.executeAfterInsert(Trigger.new, Trigger.newMap); }
            when AFTER_UPDATE   { this.executeAfterUpdate(Trigger.new, Trigger.newMap, Trigger.old, Trigger.oldMap); }
            when AFTER_DELETE   { this.executeAfterDelete(Trigger.old, Trigger.oldMap); }
            when AFTER_UNDELETE { this.executeAfterUndelete(Trigger.new, Trigger.newMap); }
        }
    }

    protected virtual void executeBeforeInsert(List<Sobject> newRecords) {}
    protected virtual void executeBeforeUpdate(List<Sobject> updatedRecords, Map<Id, Sobject> updatedRecordsById, List<Sobject> oldRecords, Map<Id, Sobject> oldRecordsById) {}
    protected virtual void executeBeforeDelete(List<Sobject> deletedRecords, Map<Id, Sobject> deletedRecordsById) {}
    protected virtual void executeAfterInsert(List<Sobject> newRecords, Map<Id, Sobject> newRecordsById) {}
    protected virtual void executeAfterUpdate(List<Sobject> updatedRecords, Map<Id, Sobject> updatedRecordsById, List<Sobject> oldRecords, Map<Id, Sobject> oldRecordsById) {}
    protected virtual void executeAfterDelete(List<Sobject> deletedRecords, Map<Id, Sobject> deletedRecordsById) {}
    protected virtual void executeAfterUndelete(List<Sobject> undeletedRecords, Map<Id, Sobject> undeletedRecordsById) {}

    private String getClassName() {
        return String.valueOf(this).split(':')[0];
    }

    private Boolean isDisabled() {
        // Add your logic to read your custom setting here
        return true;
    }
    
}