@Syanindita Sure, though you still might have read these, I also will put its publishing status and general theme next to the manga in case you absolutely hate infinite shounens or something. In no apparent order, and more than 5 to compensate for using popular titles:
1.
Three Days of Happiness (short, completed SoL/romance that has a depressing mood)
2.
Yugami-kun Doesn't Have Any Friends (long, completed SoL following a self-made social outcast and his only friend, also single-handedly got me into rakugo)
3.
Girl's Last Tour (medium, completed SoL following two girls in an abandoned, post-apocalyptic supercity)
4.
Assassination Classroom (medium-long, completed SoL/school life following a class as they attempt to kill their alien teacher)
5.
Fullmetal Alchemist (long, completed action manga with realistic/logical magic about alchemists trying to find the sorcerers stone or something)
6.
Arachnid (medium-long, completed school life/action manga about an assassin high school girl that has spiderman powers, except not, as she fights other Kratt-likes with bug powers)
7.
Made In Abyss (medium-long, ongoing action/horror?/SoL? it switches tones a lot and slowly gets darker as the story progresses. It also has a weird fascination with stringing up kids naked, I think the author is a shota/lolicon, so theres that)
8.
Komi-san wa Komyushou Desu (long, ongoing SoL/school life/romance that follows THE BEST CAST OF CHARACTERS EVER, fight me)
9.
World Trigger (long, ongoing action/school life? about an organization of people who defend a city from humanoid invaders from different dimensions, its a shounen battle manga, but the magic they use is dope as all hell, and they actually win with tactics instead of yelling and friendship)
hopefully that is enough to keep you occupied for a while, and if it isn't then I suggest you read every manga with a rating of 9.00 or higher, there's a reason they're so liked