This is easy to fix, you report a map problem in Waze and then follow up on a computer and mark that this turn only allows turning right. If needed you can provide this picture.

I already fixed several intersections this way.

That's assuming the problem is indeed with Waze and is not just asshole drivers. When I am in scenario when Waze made me make an illegal turn I report the map issue, turn the way sign suggests and wait for Waze to come up with a new route, so I'm surprised that no one did this yet in your area.

What's the intersection?