MikXL_23 Normal MC who is not so fucked up in the head:
Lord of mysteries (Note 5).
Throne of magical arcana (Note 4).
Troubled and head-fucked MC, if you find someone in real life who is similar to them, run away!
Warlock in the magus world (Note 3-2).
Age of Adepts (Note 3-2).
Some others that are decent:
When A Mage Revolts (Note 3.5 - 4).
The Strongest Gene (note 3)
(I didn't like it very much, but maybe you like it, I don't even know what to think of the MC, I didn't think the novel was good enough and I ended up dropping it.
A wonderful novel in this regard is:
Savage Divinity (Note 5).
The MC suffers a lot in the beginning, is funny in some parts and somber in others. We have several different POVs, which is interesting.
I think the protagonist is very human in terms of behavior, how people should be and not the bizarre that I read in most novels. It also shows the conflict between personalities and ages that the MC had before and the one he has now.
There are a few more but I got tired and I don't remember much of others that are in English.
I hope it helps, if not with your writing and inspiration, with your reading for fun.
Checked world building.
Checked writing quality.
Plot development? Checked.
Logic with minimum possible contradictions within the logic of the world?
Checked.
Checked character development.Originality? Checked. (Within the same genre we can have several similar novels and sometimes some that stand out, when they create a different power system, the construction of the world itself, not just the same system of magician or classical cultivation).
Lord of mysteries, Doomsday Wonderland, Cultivation Chat Group (this was one of the first of its kind to be written and one of the best writings of the chat genre, so I consider it the landmark and reference it as the original of that genre).
Someone wrote about the system for the first time, someone wrote about having an artificial intelligence chip in mind when transmigrating for the first time, someone wrote the first novel of infinite style.
Whether or not these people launched a trend and created subgenres, they were original. It does not mean that the copy is bad, but let us put for example the cultivation novels, some are very good, but it is still more of the same. Where's the deferential? I think that Doomsday Wonderland can be placed with infinite style, but it has the difference, read and you know.
Lord of Mysteries is undoubtedly orginal, even if it uses the reincarnation element and takes on someone else's body and all that genre.