Demon Hunter in Sindarin?

Hey everyone, first time poster. I’ve been getting into these languages for he past year and I’m learning a few words. I really want to make a new name for my gaming profile/characters and I was wondering how to combine Sindarin words for Demon and Hunter or Hunter of Demons. I don’t know how this works but here’s what I got.

Either Farograug (Faroth for Hunter and Graug for Demon) or (G)Raugoroth (reverse of above)

Honestly though no idea what I’m doing or which word should come first (or if they can be combined). If anyone has a better sounding suggestion, or just cool sounding words with cool meanings that would be helpful! Thanks!

Ulunn-dagnir? I don't know. I guess "Úan-" would work too.

The word for "demon" appears as raug (rather than graug) in most of Tolkien's notes. And as with Balrog, AU becomes O in most polysyllabic words. The word for hunter is better attested as faron, we cannot be sure on the meaning of faroth. I would combine these as Rogfaron.