I really dislike this trilogy, I read the first book and 1/2 of the second book had to trash it.

One book series that was new to me (not overall too long like some) is "The Broken Empire" trilogy by mark Lawrence.

https://www.amazon.com/Broken-Empire-Mark-Lawrence-Book/dp/B00Q5GLNOU/ref=sr_1_1

one of the best to me (older) is the Princes of Amber series by Rogern Zelazny

I'll put it up against most others.

www.amazon.com/Great-Book-Amber-Complete-Chronicles/dp/0380809060/ref=sr_1_1

Years ago, I read and liked the Elric of Melnibone series.

Here is one I really liked, read it in the 80s and then re-read it a few years ago and it held up. Lots of magic and magical creatures etc. But what I like about it is that it takes a regular person from Earth and puts him in a fantasy setting and he can't decide if it's a real event or is he just dreaming it.

The Chronicles of Thomas Covenant.

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It’s kind of darker brooding, like he should be as powerful as Gandalf for example but he doesn’t want to believe it so he doesn’t use his power.

But the idea is when he gets bonked on the head or near death in the real world he slips into the fantasy world.

The other book I linked above Princes of Amber. The main characters actually live in a fantasy world like a multiverse so the can shift into what we would call our real world.