my friend wants some webtoons like solo leveling or just a with an overpowered MC

you should check this list out, there's quite a lot
https://www.mangago.me/home/mangalist/626481/

These are my personal read but I hope this helps. Here ya go have fun (●'◡'●)ﾉ

Murim Login
Tomb raider king
Omniscient Readers viewpoint
Nano machine
SSS class suicide hunter
Kill the hero
Beginning after the End
Legend of the northern blade
Gamers
Return of the frozen Hero
Player who can't level up
Doctor rebirth
Max level retuner
Poison Dragon: Legend of Asura
The Tutorial tower of an advanced player
The beginning after the end
Reverse Villain
Dungeon Reset
Solo leveling
The max level hero has returned
The Descent of Demonic Master
Eleceed
Noblesse
Ranker who lives a second life
Leveling up only by eating
Berserk of the Gluttony
Trapped in a webnovel as a good for nothing
Arcana Fantasy
Mercenary Enrollment
Weak Hero
Study Group
Lightning degree
The undefeated swordsman
Viral Hit
Peerless Dad
Path of Shaman
Return to Player
Trash of counts family
Gangnam Dokkaebi
Villain to kill
Polarity
Other worldly sword Kings survival record
Return Survival
True Education
Limit Breaker
Arcane Sniper
The Boxer
The Lords coins aren't decreasing
Solo spell caster
Again my life
Medical Return
OOPARTS
The live

thank you both