Just get a UVC bulb and use whatever fixture you might have. https://www.amazon.com/dp/B08HFKMD2S

We went this route https://www.amazon.com/dp/B0989QGCDB
and connected to a smart switch (or "manual" switch) and leave it on for 10min at a time. You have to be cautious using it, so it would be wise to read up on proper use of it.

Any LED based "UV" "Sanitizing" light are fakes.