goes to Steam, searches for items with tags "Anime", "Singleplayer", and "Shooter", type "Game" to exclude bundles, sorts by "User Reviews"
295 results match your search. 97 titles have been excluded based on your preferences.
That's not logged in, so I assume that the 97 probably have adult content or something that Valve defaults to not showing, so figure ~400 games.
EDIT: It looks like "Shooter" can also mean stuff like shmups or rail shooters. You may be interested in that, but if not, replacing the "Shooter" tag with the "FPS" (first-person shooter) tag:
Or the "Third-person shooter" tag:
EDIT2: Apparently and obnoxiously, Valve didn't make search URL links compatible between the mobile version of the site and the desktop version of the site. The above was from a desktop browser. But if you're on mobile, you can probably recreate the search by adding the same tags.