What iPad size should I go for?

Hello, I want to buy a iPad Pro to play games on while sitting on the couch, put it on my upper legs on a pillow for a good angle.

Things I do is:

80% gaming 10% watching streams 10% browsing internet/socials

I don’t need to take it with me and the iPad will be 99% used at home. I don’t use a laptop or PC for years since I do literally everything on my phone. I don’t like to use a controller and I really prefer touchscreen (For controller I got my PS5 anyways but getting a bit tired of it and want something more casual)

Should I go for the 11 or 13 inch?