I’m playing two games at the moment:
Yet another run in Nier: Automata, second playthrough, first time on steam deck. It runs surprisingly well.
Stardew valley. For steam deck it’s a killer game - 8-9 hours on a battery, perfect for resting.
I also have Snowrunner and Vampire Survivors as my go to games.
The game is what others said and as for what it is it’s pretty unique series and good game. But as you said - you can’t see it’s appeal right away, maybe you are like me and this game will be just boring for you. I tried to play it on PC for more than ten or even twenty hours, with friends and alone. Just doesn’t click.