If you’re playing tournaments, one area that you can likely improve your game and focus is with a solid pre-shot routine. Routines can help you sharpen your focus by eliminating distractions, and helping you stay or get into a flow state.
The list of pre-shot checks to go through can get extensive, but it’s really more about eliminating extra stuff. The people with Rippin Discs on YouTube have a great video with Latitude 64’s Clint Calvin, to help you sharpen up your pre-shot.