Ok. I think I know one thing more :)
You use custom tags in your assets. Much of them are combinations of other tags so they don't have much sense because Itch allow to filter by many tags at the same time.
For example you used the following tags: "low-poly-dungeon", "modular-dungeon", "modular-tiles" but you didn't use "modular" and "dungeon" tags. The tag "3d-assets" is also custom and absolutely useless because you published asset pack with "3D" tag so it is obviously is asset pack that contains 3D models...
If you will click "more info" you will see metadata about what we were talking a bit earlier and tags. You can click on each tag and you will be find yourself on a page that shows you all the assets with that tag. You can see that most of your custom tags use only/primarily you so it don't have sense and pollutes itch...
Also what file format your archives contain? OBJ? FBX? (I can't see because can't unpack rar) They have their tags you should add...