I don't know about the manhwa you're looking for but here's a recommendation you might want to try if you haven't yet:
https://www.mangago.zone/read-manga/the_world_s_best_engineer/
https://www.mangago.zone/read-manga/return_of_the_flowery_mountain_sect/
https://www.mangago.zone/read-manga/uglyhood/
https://www.mangago.zone/read-manga/path_of_the_shaman/
https://www.mangago.zone/read-manga/the_s_classes_that_i_raised/
I'm reading all of them, but thank you!
I recommend https://www.mangago.zone/read-manga/youkai_gakkou_no_sensei_hajimemashita/
It has anime which just finished
YES THANK YOU
I read this manwha once, but I fairly remember it. Someone got recarinated in a fat kid but he was royalty or something?(or maybe only had a high status) I also know people underestimated him but that's all I remember. (BTW if u have any pure comedy non romance and non shut manwhas, Mangas, and/or manuehas, feel free to recommend them to me)