Can anyone recommend some apocalyptic manhwa pleaseee?

all bl but hope its what your looking for:

https://www.mangago.me/read-manga/rainbow_city/
https://www.mangago.me/read-manga/radio_storm/
https://www.mangago.me/read-manga/undead_tsuyuhisa_fumi/
https://www.mangago.me/read-manga/little_mushroom/
https://www.mangago.me/read-manga/the_hounds_of_sisyphus/

https://www.mangago.me/read-manga/a_room_without_space_side_story_1/
https://www.mangago.me/read-manga/dead_man_switch/
https://www.mangago.me/read-manga/let_s_meet_alive/
https://www.mangago.me/read-manga/believe_my_sign/

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

Survive romance
School bus graveyard