Idk about blacklisting genres but you can click the three bars on the top right to go to more options, then at the bottom click all genres, then click check for a genre you want to read and click X (click twice) for webtoons genre. This should take out the manhwas. Then scroll to where they show the manga and click “popular” to see the top ones. You can of course click multiple genres if you want too etc.
I actually already know abt this feature, my problem is that the popular mangas rarely change in ranking unlike the the featured page and sometimes manhwas still pop up cuz they weren't tagged as a webtoons as well.
There actually used to be a sort by hot category but they removed it for some reason :/
Tysm for replying tho :D
I've been using this site since 2019 and I still dunno how. I just wanna be able to use the featured manga page cuz it's mostly manhwas on there.