Need manga recommendation

Jojo's Bizarre Adventure is pretty much a must-read if you've somehow managed to miss it so far.
I'll also recommend everything and anything by Naoki Urasawa.
Finally, on the silly end of the spectrum, I'd say Transistor Venus is certainly worth a shot.

I see you like shounen manga, fights and so. Rurouni Kenshin.
If you liked Hajime no Ippo you can try Ashita no Joe

Wow read virtually only shounen manga?

You could try https://myanimelist.net/manga/44485/Nanatsu_no_Taizai

Tower of God.....Tower of God.....Tower of God!
Trust me! It is so much better than anything!

https://www.mangaupdates.com/series.html?id=55901

I'll second jojo's bizarre adventure and berserk is great but quite dark.

kyochuu rettou, amano megumi wa suki, hammer session, konya wa tsuki, onideka, shen yin wang zuo, shirogane ,tate no yuusha, to aru ossan, world customize creator, dead tube, etc.

Ability + Noblesse

looking specifically at shonun Psyren was okay.
also soul eater >_<
also I know the anime isn't that good but tokyo ghoul has a pretty good manga-same with deadman's wonderland

if...it doesn't have to be shonun then looking at comedy Zai X 10 was by the same guy as daily lives and d-frag is fun
also Boku wa Tomodachi ga Sukunai

Crows, Worst by Hiroshi Takahashi

Edit: and the law of ueki (& the law of ueki plus), fairy tail 😊
Edit 2: if you actually end up reading crows and worst, don't read them simultaneously because worst is a direct sequel. Finish crows first then read the worst.

Gantz (my personal favourite of all time, I can't even describe, it's brutal, gorry and kinda feels realistic)
Terra Formars (an awesome brutal once again shonen series with some really twisted plot-twists and a lil bit of science)
Akumetsu (high school student decides to punish corrupted politicians in a real bizarre way - he makes them confess their sins, then he kills them and after that he kills himself, wait, what?! the rest you have to get to know yourself)
The Promised Neverland (modern "black horse" series that many compares with Death Note, yes, it's THIS good, you get to love it immediately)
Elfen Lied (anime adaptation is just a lil piece of the whole plot, once I read the manga a few years ago I've been crying a river at the end)
Akira (same case as Elfen Lied, though the plot is almost the same there's much more minor interesting details + awesome old-school style)

I've recently started writing reviews of anime and manga. If you like and are willing, here is the link to the facebook page https://www.facebook.com/Nergeyn/?ref=bookmarks (PS: will start writing them in English when I get a few English readers. If not, it would be just a waste of effort. Either way I'm here to recommend, in case you haven't read them yet, "Gantz", "Onani Master Kurosawa" (It's a slice of life) and "Shaman King" (if you like shounen, you will love it).

Blame, also, Onani Master Kurosawa
don't judge by it's name, seriously don't

Pandora Hearts, if You like comic with all characters was a gray characters
I mean, they're horribly asshole, but awesome angel at the same time
and YES, all characters was like that

Ranma 1/2

I highly recommend you to read Berserk.

I'm not a weeb or a manga reader but I'm a die hard Dark Souls fan.