glow ups!!
http://www.mangago.zone/read-manga/ore_no_oniku_chan/
http://www.mangago.zone/read-manga/there_s_something_wrong_with_my_popularity/
http://www.mangago.zone/read-manga/the_next_door_neighbor/?M2Ho (kinda toxic how he was only liked after a glow up)
http://www.mangago.zone/read-manga/dress_him_up/?RsKh (already good looking but doesnt know how to show it, get's fashion advice)
https://www.webtoons.com/en/drama/lookism/list?title_no=1049&page=1 (body swap from ugly to hot body)
these are both actions that have the glow up along with getting stonger
https://www.webtoons.com/en/fantasy/dice/list?title_no=64&page=1 http://www.mangago.zone/read-manga/solo_leveling/?C5Ax
http://www.mangago.zone/read-manga/reflection_of_the_soul/
There’s more chapters on the app Webtoon
Can you recommend me some manga where the mc is ugly in the beginning but then he/she transforms or just doesn’t know/show he/she is good looking