I liked PV Sindhu’s statement after she won the world championship gold she said “I treated the finals as just another match. I just wanted to go out there and give 100% . There was no ‘finals phobia or anything of that sort’.”
Infact this mindset is what we sports psychologists prescribe to the athletes. Don’t give too much importance to the event - focus on the process- give your best and leave the rest. Be prepared for any result that comes your way. The imp thing is to be in the present and play one ball at a time and think not too far ahead. This reduces the pre-match competitive anxiety and pressure.