My problem with anime

Is they keep making more and more with only twelve episodes. I want more anime like one piece and fairy tail, that continue to develop characters with further episodes. And having a game leveling system with the main character leveling up and gaining immunities and becoming super powerful in certain ways over time would be awesome. Also if that character was a loner too. Btw harems suck. To be honest. Even a gay man harem would suck (even though there's never been one, let alone in a fantasy anime). The anime 'so I'm a spider so what', was awesome when she was stuck in the dungeon, because she became more powerful and simply spied on people going through the labyrinth. Itd be cool if she acquired a language skill that allowed her to learn new languages in the future as a result. But no. Due to a few dipshit complaints, the author had to add multiple points of view and had to have the character interact a bunch with people 🙄. Ugh. Story writing is everything to me and I love the concept of a loner mc becoming more powerful in an isekai. While having a game level system the MC benefits from. Sigh.....just ranting about current new crap anime that never changes.