I recently wrote my first trigger and I'll just say now that I'm not a formally trained software developer.  By researching online I was abe to bulkify my code and it seems to be working great in Sandbox with either a singular update or with Data Loader, however I'm sure that I've done something wrong, so I wanted to throw my work to the sharks and see what I have done incorrectly before I start trying to learn how to write test classes and push to Production.  Thank you very much for your time.

trigger MyCaseCustomerStatusUpdate on Vertical__c (after insert, after update) {
 
// create a set of related account IDs
 
set <ID> accountIDs = new set <ID>();
 
//create set of all verticals
 
set <Vertical__c> verticals = new set <Vertical__c>();
 
//create list of accounts to update at end of code
 
list <Account> accountList = new list <Account>();
 
//create Account object for later reference
 
Account accountRecord;
 
// for every Vertical, add its related to account to the set and create set of Verticals for later reference


for(Vertical__c v: Trigger.new){
accountIDs.add(v.account__c); 
verticals.add(v);

}
 
// create a Map to match the Vertical related to Account IDs to their corresponding account
 
Map<ID, Account> accountMap = new Map<ID, Account> ([Select ID FROM Account WHERE ID in :accountIDs]);   

//loop through all accounts added to account map

for(Account a:accountMap.values()){

//add account to list to update

accountList.add(a);

//loop through verticals

for(Vertical__c v : verticals){
  
   //if the ID on the account and the account ID on the vertical match, update the status field.
  
   if (a.Id == v.account__c){
  
   // update Account object
  
   accountRecord = a;
   
   // update the status on the account object
   
     accountRecord.MyCase_Status__c = v.Status__c;
   }
  }
}
  
update accountList;
 
}