I write them into a spread sheet, so I can cap track of complete/ongoing manhwas, and also what I've read/reading/tbr and how I rated it out of ten, as well as chapter count. I would reccomend formatting so you can colour code complete/incomplete and reading/finished which you can learn with a YT video.
I also keep a physical list that I have writ......
With all the manga sites closing I’ve been wondering how everyone saves/keeps or formats their manga lists? After the great list wiping of 2026 this has me constantly stressed (〜￣△￣)〜