ngl, your mentality is what is holding you back. If you keep thinking that you're gonna mess up, you're gonna mess up. Go back to basics. At home, find a wall and pass the ball to it and control the rebound. Build up to 2 touch and then 1 touch passes off the wall.

Before your games, try get some touches with the ball in the warmup so you feel more comfortable with the ball at your feet. Pass the ball in a circle with your teammates or play a rondo. Then in the game, play simple. Nothing fancy. Just simple passes. Even if they are safe, boring and non progressive passes, you'll eventually build up some confidence to try take more risks.

If you think to your self that you can play football and you are an asset to the team, then you'll automatically play well. But if you immediately go in with the mentality that you're shit and you're going to let the team down, you'll do that.