chromebook touch screen aint working

my dad  bought this in 2023 then i saw in youtube u can on touch screen in  chromebook so i

try it but every vid i saw it enable it it never worked i even looked through google to do it showed that search+shift+t and search=shift+p but when i try it i used both but only search+shift+p when i used it my mouse didnt move when i did it again the mouse started moving but touch screen didnt work after all that so pls tell  solution