Spontaneous Hand Recognition appears on my screen

Hi

I have a Mac-Sonoma. I get spontaneous hand gestures appearing on my screen without prompting. I have checked all my settings on zoom and had a Genius Bar session at the Apple Store and apparently I have done everything correctly and have been told that there is nothing more that I can do. Essentially I am told "too bad - I can't help". Not happy

Has anyone encountered this and can anyone help out?

Thanks

CareyS