BeatriceElysia: Im only interested in fantasy games or similar.
Im not fond of KOTR, Spellforce, might and magic...
You like fantasy and strategy and don't like might & magic? That's gonna be a problem, rules out a lot of related/similiar games.
How about
Blackguards? Good team-based RPG with tactical, turn based combat. The story isn't great, just serviceable, and character customization is so-so (choices of class and skills, but not much in terms of race/appeariance etc.) Really my only major complaint about is that the random virtual dice rolls can screw you over in a fight no matter how well you play, and they do screw you over often. But if you have the patience to deal with it, there's a good RPG experience there.
Really the best game I could possibly recommend you is Drakensang, but sadly it's not on GOG. But if you can track down a copy- do so. It had great graphics (at least for it's time, but I think it still holds up well enough), immensly fun gameplay if you like team-based RPGs, and great freedom in creating and leveling up you character. The world and story are definately very cliched high fantasy, but honestly I don't think that's bad. If you like that kind of setting it's always a joy to see that kind of adventure done so right. One of my favourite RPGs.