Bro just lemme ask this straight

No, it's very fluffy tho! I recommend reading this 100%

Could you please recommend me some manhwa if you know based on school life that have smut too

Everything without a warning is a easy enough read. Eighteen's Bed is another story to check out but I personally believe recommending that to people is an act of cruelty.

https://www.mangago.me/read-manga/1995_youth_report/

(The father in this one is abusive towards his son so, trigger warning)
https://www.mangago.me/read-manga/only_kind_to_me/

https://www.mangago.me/read-manga/protect_your_purity/

(I can't remember is the first couple went all the way but the second one did.)
https://www.mangago.me/read-manga/spinach_bouquet/

https://www.mangago.me/read-manga/nerd_project/

Read this first.
https://www.mangago.me/read-manga/unsleep/

https://www.mangago.me/read-manga/abnormal_rommate/

(Another case of an abusive father and you're going to have to wait a bit for the main pair to get together. It's a melancholic slow burn and the mc got entangled with a bastard before he met the guy he likes. It it worth the read, though.)
https://www.mangago.me/read-manga/yang_il_woo_and_i/

Omg thnqu for all this recommendation i'll give it a try , and about eighteen's bad i've read it and tbh in my perspective the ml is just a mf I think i might have to drop this tho , again thnqu for this recommendation