Arhive.org is where I get most of mine.

https://archive.org/details/xbox360games

yoho!

A lot of games seem to be trying to make direct copies of the UI from Breath of the Wild. Palworld comes to mind.

Diablo was doing that long before Minecraft came along.

VLC if you just want to watch it, MakeMKV/Handbrake if you want to rip it to a file.

VLC does have the codecs included, you’re likely just not opening it properly.