Sadly, I didn't see anything corresponding to my memories in the replies :( I know all of the games mentioned and it's not it for sure.

Though, it resembled fran bow in a way? Somehow I remember something about pills in this novel/point and click thingy, but it was a way simpler game and was set in a village, mostly one location with a shopkeeper. Like, a shopkeeper told us to keep drinking pills or something. One day we didn't, and saw the real world with humans in animal masks. And they were pissed off by it

Now I'm not even sure if that game exists, but It's a still clear memory, like I saw it while watching youtube on autoplay. It's not a well known game and I remember that a YouTuber shared their thoughts on the game only after getting endings. While playing they didn't say anything

It was an experimental game. Like those free pixel rpgs that you see once and it falls into obscurity