I liked Solo Leveling, but… your description of it is totally accurate, hahaha!
I’ve heard that a show that just started airing is kind of like solo leveling, but with actual characters… Tomb Raider King. I haven’t started watching it yet, so can’t say if it’s any good, but it seems interesting!
Mushi-shi is incredible. One of my favorites. I envy you a bit, getting to watch all of these awesome shows for the first time. Welcome!