[Basel A]

Sounds like a tough situation. The first thing I'd say is that a team needs to be on the same page about team goals. If some people have very different goals, that's going to cause friction. For your team, a goal to be selected for the elimination matches would probably sound reasonable to everybody. Actually achieving that goal.. I could get into that if you'd like.

You discuss how it seems like a number of your fellow students aren't working without exact instructions. Most high school students aren't self-starters. You clearly are, and it sounds like you're doing a great job in the work you're doing. But your fellow students need to be adequately prepared for the tasks they're doing. This can be accomished in trainings in the fall, you could also attend workshops (I know UMinnesota hosts workshops).

Building up and retaining knowledge in your team is critical. Typically adults take on most of that role, but it doesn't have to be that way. Your second season as a student should be your first as a mentor!

People should also want to do what they're doing. Encourage people to find what they enjoy doing, and encourage people when they're doing. If you take the mindset that they're the problem, you'll never reach a good solution.

Essentially my advice boils down to this: right now, you're wearing a lot of hats and filling in every gap personally. If you want to be successful now and you want your team to keep being successful once you're gone, you've got to be a leader and create a culture of shared knowledge and work.

That's going to be hard. Most of the time it's easier to just do the work yourself rather than teach and lead and encourage and delegate, but a team of 2 or 3 is not going to be successful, neither on the field nor in the real goals of FIRST.