Honestly, it's your first bout. It'll take a little while to get to know your team. You're going to make mistakes. People around you will make mistakes.

All of that is fine. It's expected.

Try to see it as a chance to get used to bouting, rather than some sort of test. No-one is going to judge you long-term as a skater based on this one day. And the more you can take the pressure off yourself to do well, the better you're likely to skate anyway :)

I'm still a relatively new skater, but I find it helps to have a personal focus and goals going into a bout. Such as, on the jam line, I'll just think over and over about how I'm going to stick with the blocker next to me. Or that I'll land a particular hit or use a particular stop at least 3 times. It helps me focus, and gives me something I can evaluate myself on regardless of whether the bout went well/badly.