A:AnswerYes, actually you can and surprisingly well considering it wasn't really designed for that.
I've played Forza Horizon 5, Doom, Marvel Rivals, and Immortals: Fenyx Rising on it, all without issues and all using medium settings.
The only downside is the fact that the screen is 60Hz, but most of the games I play are single player, so it doesn't really phase me.
A:AnswerYes, and although they have had LPDDR SODIMM modules in the past, ultralights will almost always have soldered RAM. With Intel Core Ultra chips in this class, it is integrated into the CPU so the latency is insanely low... These AMD chips do not use this technique.
A:Answer16:9 would be a resolution of 1920x1080 like many TVs.
16:10 would be a resolution 1920x1200, as this laptop uses.
You can get this by dividing Width by Height where width is the larger number.