Pavolink said:
I want to play a lot.
I read somewhere that is is similar lo HK, but focusing more on platforming than combat.
I would like to buy a physical edition.

It's not similar do Hollow Knight at all. They're in the same genre, but that's about it. Ori is a far shorter and more linear game, with indeed more focus on the platforming than the combat (like, way more). There's so little backtracking and revisiting older areas in Ori, and so little combat to do, that it feels more like a level-based platformer where the levels just so happen to connect to each other than a proper Metroidvania.