A few things that worked for me at least...
1) level up the art (yes I know I should practice this more lol)
2) play around with controversial topics but try your best to be centrist about it. Don't wanna alienate the half that disagree with you. At least give some validation to the opposing argument.
3) action. Fight scenes keep me interested at least
4) drama. if there's high tension. Dysfunctional families or individuals with certain psychological disorders.
5) update schedule. Likes, comment, subscribe to other webtoons and novels