I don't understand what this game does wrong for me

I absolutely love the game, it's beautiful, the combat and gameplay in general is super fun, then why don't I find myself wanting to play more?

I'm almost 20hs in, just finished Act 1, and even tho I love every aspect of this game I can't find motivation to keep exploring or playing for too long? Like a couple of minutes and I get bored.

Maybe I think the game is too repetitive? Like, every fight is the same, everything I could possibly find exploring I've already found countless others like it (Foxes, bamboos, fights, whatever). Maybe the game overstays its welcome too much, maybe it's my fault for doing side stuff, idk.

But I'm also not sure this is my problem because there are a lot of games I love that are just like this one and I have no problem playing for hours and hours on end

Maybe the map is way too big too? Like there's definitely enough content to fill the entire map, but so much more of it could just not be there and nothing would be lost, it's just too bloated?

Anyway, did anyone else feel like this? Any tips? Maybe I'll just focus on the main story for a while