light I used to think this way... very recently in fact. During 2020 - 2022 I stopped watching anime almost completely after a gradual decrease from previous years. Only really rewatching shows like Code Geass, Steins;Gate, the Monogatari Series, because I knew I liked them and wanted to be reminded of the story. If I picked a new show I'd often drop it halfway through because I didn't care to watch the rest, among other things.
Around December of 2022 and Early 2023, I randomly decided I should watch more anime, and started picking up shows for very trivial reasons. Cute girl appears? Picked up. Saw a cool 5 second clip of it on 4chan? Picked up. Read a really good doujin of it? Picked up. The discussion for an airing anime seems fun? Picked the fuck up.
Eventually I realized all of my expectations for all of these I picked up were always negative, but watching even just one episode would surprise me, because they were genuinely good and I was actually having fun with them.
So I'm certain it's a mental thing, maybe a phase in our being that makes our mindset not be in the right place for it. But if you can go back and remember what it was that made anime worthwhile to you in the first place, then you can start enjoying it again.
Senza amore, la verita non si vede