Hello. These are great series. If you haven't, I really recommend giving them a try:
https://www.mangago.me/read-manga/i_want_to_hold_aono_kun_so_badly_i_could_die/
https://www.mangago.me/read-manga/the_demon_king_s_confession/
https://www.mangago.me/read-manga/kenrantaru_grande_sc_ne/
(Ok! Here's some interesting ones with no super annoying characters as far as I remember, tho some of these I haven't finished/caught up with. Warning: some of these contain dark themes/images)
Phantom Tales of the Night
Jujutsu Kaisen
Totsukuni no Shoujo
Eleceed
Trash of the Count's Family
Kings' Viking
I Became the Male Lead’s Adopted Daughter
Clover (tetsuhiro Hirakawa)
Three Days of Happiness
Nan Hao & Shang Feng
Unhinged
Musuko ga Kawaikute Shikataganai Mazoku no Hahaoya
Gangsta.
19 Days
Oyasumi Punpun
Hunter x Hunter
Bless
Jojo's Bizarre Adventure
Monster
To You, The Immortal
Mononobe Koshoten Kaikitan
The Dark Magician Transmigrates After 66666 Years
Juujika no Rokunin
Papa Wolf and the Puppy
Mononoke (btw this one has a fantastic anime)
Vinland Saga
Kamonohashi Ron no Kindan Suiri
Pet Shop of Horrors
Help i don't know what to read...nothing seem interesting anymore