can anyone recc me some action fantasy w op mc no harem mangas, japanese, black and white ...

So I follow few lists contains them. Hope you'll find your liking.

https://www.mangago.zone/home/mangalist/901798/

https://www.mangago.zone/home/mangalist/290517/

https://www.mangago.zone/home/mangalist/567417/

https://www.mangago.zone/home/mangalist/626481/

thank u sm!!

As someone who also likes action manhwas w no harem I recommend you:
Solo leveling
Nano machine
The world's best engineer
Omniscient Readers point view
Trash of the counts family
The S-classes that I raised
How to live as a bootleg healer
Genius Archer’s Streaming
Killer Peter
True education
Eleceed (it's good and funny)
Rankers return
Return of the mount hua sect
Heavenly Sword’S Grand Saga
Existence
I'm not that kind of talent
Infinite mage
The Dark Mage’s Return to Enlistment
Player hides his past
Martial god regressed to level 2

Ok I think that's enough