Hello, I have a Nintendo Switch. I want to record a speedrunning, but when I record, I click the recording button of the Nintendo Switch every 25-30 seconds, do you know if it is possible to participate?

Don't bother with this method, it's not worth your time. Instead, just point a different camera at the screen you are playing on. Most games will accept this as valid video proof (when in doubt, ask the game's moderators or check the game's rules).

Thank you so much!! Quivico