I’m sorry you had this experience on Training. I understand it can be irritating as a trainee controller.
I strongly suggest opening up other airports apart from KLAX, EGLL and the like, and making an ATC tracking thread and inviting people to join when you open up airports. You can read more about how to do that in the topic below. And maybe one day, you can sign up for IFATC and control Expert, where users are far more serious. :)