Yeeah.. honestly. I think itch is fine for my purposes anyway.. XD
As long as I can filter out the visual novel tag with "?exclude"
Viewing post in The ability to filter OUT genres
My observation was and is, that some games use visual novel as a tag, despite not being a visual novel (opinions will vary). The worst I have seen in such mistaggings was a developer tagging a game as point&click, because you had to click things with the mouse. For visual novels, some tag it, just because they used the renpy engine or because it is a story rich game.
I made two tampermonkey scripts that might help you, if you are willing and able to use a browser extension that can run such scripts.
Since visual novel is a genre, it can be filtered trivially on client side. But only if the main genre was set as visual novel.
And the other script gives abililty to filter games and developers individually. This is handy to filter away the content of your library and all the games you have already examined. Should you visit the same places every week, that will de-clutter those pages far better and more efficient than a mere tag filter. And you do not even need to hide those games. You can give them a red border or make them greyscale or whatever you like.