I've played Noita. It's fun but not exactly what I'm looking for.

Divinity isn't a magic game I'm looking for, but it is an RPG I want to play at some point, I've only heard good things about it.

With Psychonauts, I've heard of it as a cult classic that every True Gamer™ has to play, but I'm not really into platformers.

AFAIK Witcher's combat isn't really about magic, it's an RPG with some magical abilities that help you win swordfights, which is not what I want to play at the moment. It's a maybe, but I think there are better fits.

Legend of Grimrock 2 looks very interesting, it looks like the RPGs that were made before I was born and I wanted to play one for a while. A game in that style that can run on modern PC? Sign me up!

I have conflicted feelings about Persona. I've never played one, I haven't even seen the gameplay. From what I know of the gameplay it's unique and interesting to me. Visual style looks cool. But I also know that some of the story and character decisions made by the devs are really weird even by Japan weirdness standards, and very weird to me personally. Considering that the story and characters are the main part of that game, I would rather wait for the next one, and hopefully they'll stop doing that weird stuff and fix it.

I'm playing both Prey and Dishonored 2 right now. I really like them both, which makes me think that the game I want is an immersive sim with extensive magic system. Given that an immersive sim is a rare genre, I don't think a game like that exists. Still, thank you for all your suggestions.