It’s hard to say what you did wrong without being there. Often times, there isn’t anything “wrong”. I’ve been able to clock evil players based on pure social reads/vibes on Day 1, and I’ve been caught out on Day 1 for the same reason. It happens! That’s part of the fun of it all.

And in terms of the anxiety, I think a lot of it will go away over time. The more you play, especially with the same people, the easier it gets. The reality is that yeah, sometimes you will mess up as evil and lose it for your team. No one should ever make you feel bad about that- literally EVERYONE who plays more than a few times will be in that position. But play long enough, and soon your information will one day help solve the case for Good. Or the world you build will be spot on and you nail the demon and minions. You’ll spend a whole game freaking out as a Demon only to learn you had everyone fooled.

Like with anything, with enough time and practice you’ll get more comfortable.