(Some of these have an anime as well if you're interested. I put an "A" next to the ones that do)
Saint Oniisan (A)
Nan Hao & Shang Feng
Danshi Koukousei No Nichijou (A)
Papa Wolf and the Puppy
Sakamoto desu ga? (A)
MusSoap
I Became the Male Lead’s Adopted Daughter
Osomatsu-san (A)
Please Take My Brother Away! (A)
Musuko ga Kawaikute Shikataganai Mazoku no Hahaoya (this one has some more serious moments, but it's still a really cute story)
These lists are what you’re looking for Hope you enjoy
Laughter’s the best medicine
https://www.mangago.me/home/mangalist/1442197/
romance fluff
https://www.mangago.me/home/mangalist/1437118/
children fluff
https://www.mangago.me/home/mangalist/1408361/
friendship / other type of fluff
https://www.mangago.me/home/mangalist/1751016/
Weird but wholesome ❣
https://www.mangago.me/home/mangalist/1735959/
Something lighthearted or anything that will at least make me chuckle or something idk it can be any genre it doesn’t matter!