Hi!
I’m looking for books about mages, wizards and witches in which the magic itself is a central part of the story and not just there so the MC can slam a fireball into the face of his foes.
Maybe the magic has a will of its own or the MC is trying to ‘restore’ it from some kind of ‘disease’ or something else.
Raymond E Feist, Trudi Canavan are already mentioned.
But also: K.E. Mills - Rogue agent series starting with The Accidental Sorcerer