Want to read stories about strong and dark (but not mad) Harry.
I loved stories:
Rise of the wizards
Broken chains( Star wars cross)
Denarian series
Control

Want a story, where he changes course of world's history (like first two examples), become a ruler probably, or seeks for more power.
No servitute for dark lord or anyone else, NO SLASH,
No drippy love stories, no "I will save everyone" shit.
Length 100k+ words, M+ rate (preferable, not required).

 

Check out Marquis Black on FFN. He does the rise to power thing competently. Don't think you'll find many others of this kind of stories that won't be utter shit.

 

I've enjoyed this story: Infliction.

It's nothing spectacular, but it might be what you're looking for.

 

Check The Birth of Evil - https://www.fanfiction.net/s/4133028/1/The-Birth-of-Evil

 

You can see what kind of storys he likes, so I guess he doesn't care or can't recognise yet which storys are utter shit.

I hope you just started reading Fanfiction or are still too young to see what is good writing. You should start reading A Second Chance at Life which isn't even Harry Potter anymore and utter garbage but for people who are in the "Independent Harry" phase it's heaven