Can you guys suggest a bl manhwa/manga/manhua where the bottom is a cheater or just slutty...

Here are some steamy bl stories with slutty bottoms:
https://www.mangago.me/home/mangalist/3762913/?filter=&page=1

I recommend the second page

If you want a longer story:
How to be the choosen one

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

Definitely no returns after use

Just slutty

Non-refundable alpha
Wet sand
A man who gives it all