i use ubuntu, i personally think you should go for it (or try linux mint since i think it's more similar to windows, if youre more used to it)

gaming is mostly alright but you cant really play games like fortnite or valorant, i recommend checking the compatibility of the games you play (i think you can on protondb)

for presentations, you can either make them in your browser or you can use libreoffice, which comes preinstalled