Recs?

https://www.mangago.zone/read-manga/a_lollipop_or_a_bullet/
https://www.mangago.zone/read-manga/pyramid_game/
https://www.mangago.zone/read-manga/yagiza_no_yuujin/
https://www.mangago.zone/read-manga/let_s_go_karaoke/
https://www.mangago.zone/read-manga/sea_foam/
https://www.mangago.zone/read-manga/act_out/

(I haven't caught up with some of these, but as far as I know/remember, they don't have romance. If they do, it's not anything substantial. Warning: some of these contain dark themes/images)
Kings' Viking
Mushishi
20th Century Boys
The Dark Magician Transmigrates After 66666 Years
Hunter X Hunter
Phantom Tales of the Night
Jujutsu Kaisen
Kiichi!!
Death Note
One Piece

Action:

https://www.mangago.zone/read-manga/killer_pedro/

https://www.mangago.zone/read-manga/hero_has_returned/

https://www.mangago.zone/read-manga/return_of_the_flowery_mountain_sect/

https://www.mangago.zone/read-manga/the_earth_s_chosen_savior/

https://www.mangago.zone/read-manga/psycho_revenge/

https://www.mangago.zone/read-manga/i_quit_the_hero_s_party/

https://www.mangago.zone/read-manga/helmut_the_forsaken_child/

https://www.mangago.zone/read-manga/i_m_not_that_kind_of_talent/

https://www.mangago.zone/read-manga/academy_s_genius_swordmaster/

Acting:(this one might have some but nothing rn)
https://www.mangago.zone/read-manga/i_was_mistaken_as_a_monstrous_genius/