Like with many things, finding the best is hard, finding a good enough fit is a lot more attainable and maybe should be the goal.

If you work on projects in groups often, you might be able to find what fits you by what things you end doing especially if you do those parts well. Do you read and interpret the directions, do you do the assembly, do you keep the group on task, do you verify the output is acceptable, do you figure out how to proceed when there's a problem, etc.

Also, what tasks do people who know you ask you to help with; especially if those people have choices for who to ask and then specifically ask you. Those are things that likely fit you; especially if you get enjoyment out of doing those tasks, beyond the enjoyment you might get from doing any task for someone. Sometimes, you might get asked to do these things for reasons other than you're good at them, or you may be good at them and also hate doing it, etc; so like be aware of that.

If you're lucky, what fits you is distinctive and commercially apprechiated. But not everyone has those fits, so it's good to also look for things that fit well enough to pay the bills. You may need to develop other skills to get into a position to use your good fit as well.