The easy solution: just disable the touch screen function, as most the phantom touch cannot be fixed. You can disable the touch screen in device manager.
go to windows app store and search:Ｓｕｒｆａｃｅ Ｄｉｓａｇｎｏｓｔｉｃ Ｔｏｏｌｋｉｔ
MS surface pro ghost / phantom touch
December 19, 2021
