I wanted to know how should I use a truickrom team with two setters and four attackes I wanted to go to the world championships so can you halp me out please.
That's really not a simple question. Probably the most important factor in a battle, prediction, is something you have to learn on your own through experience - we can't help you with that.
As far as team building, there's three things you want to focus on, beyond having the move and slow Pokémon. First, you want things that help the move get set up - Fake Out, Follow Me, etc. Second, you want a variety of attackers that can cover all of the major threats with as little redundancy as possible. Make sure to use multiple different types of moves and a mix of physical and special attackers. The most important part of building the team, though, is making sure that it still works if Trick Room isn't up. Sometimes you'll make a mistake, or they'll stall it out, or something like that, and you need to be able to handle not having the advantage.
I can't really give any specific information beyond that, because ultimately it needs to be your team and you need to know how it works if you want to win.