https://www.mangago.zone/read-manga/return_survival/
I can promise you there's no romance until the epilogue which is the last chapter, the mc is focused on the apocalypse rather than romance. It's also my favourite manhwa
Hello, you can check out this sheet it has a ton of recommendation of comics ranging from actions, romance, bl, fantasy and so much more.
https://docs.google.com/spreadsheets/d/1VtsNY0Q36m6c0WwHo2AQ6o9NrvP0H2AboxRWoPwd180/edit?usp=drivesdk
https://www.mangago.zone/read-manga/hidden_house_in_the_apocalypse/
https://www.mangago.zone/read-manga/apocalypse_no_toride/ (bro this is a personal favorite even though i haven't read it in YEARS and lowkey don't remember most of it)
https://www.mangago.zone/read-manga/zomgan/
https://www.mangago.zone/read-manga/survive_romance/ (honestly i havne't caught up so idk if there's romance, but i can reassure you that if there ever will be any, it's going to be written in the most unexpected, brutally cold-hearted way possible).
https://www.mangago.zone/read-manga/zombie_100_zombie_ni_naru_made_ni_shitai_100_no_koto/ (i only read the first couple chapters, but it's definitely like. more comedy and i doubt there's romance outside of just random snippets of entertainment)
https://www.mangago.zone/read-manga/dead_life/ (THIS IS SO GOOD LOL)
zombie apocalypse please, if possible no romance