Is it better to: [A] watch videos content on a flagship/midrange smartphone that you already have, OR [B] get a cheap tablet (say, around $200 USD) to watch videos?

I have a phone that has an OLED type display and has a high contrast ratio and HDR. I don't wanna spend "flagship phone" amount of money on a tablet, so I was wondering if a cheap tablet would improve viewing experience because of the bigger screen or would it be worse since its LCD and low contrast ratio. By "videos" I mean mostly for Youtube, but sometimes TV Shows, and occasionally movies.

(And no I don't want something like a TV, too big, too much hassle for casually watching videos)

(P.S. I notice a lot of reddit threads get very judgy and poor-shaming when people mention "movie" and "phone"/"tablet" in the same sentence... 👀)

Edit: sh.itjust.works is having issues, using @shitdoesntwork@sopuli.xyz to reply for now