I know they have already been said but if you like magical girls, Sailor Moon and Magic Knight Rayearth were my go-to animes as a child. Sailor Moon has a ton of "filler" episodes and even a filler arc, but is consistent and comforting. Rayearth has no filler and also has an OVA with a different plotline and slightly different animation. I remember loving both and having the cassette tape box sets that formed a picture when you put them all together.

I also really loved Serial Experiments Lain, though the concept might feel a bit outdated once you get into it, the atmosphere is really still present. Perfect Blue was amazing and I rewatch that movie every few years as it is an all-time favorite for me.

Sorry If you've seen all these already!