Yeah I am not a fan either. I did find that if you filter out YA in general that gets rid of a huge portion of these romance masquerading as fantasy novels. It seems to be super prevalent there. But now YA is bleeding into adult fantasy as well and for that I end up having to read reviews to see if anyone specifically mentioned it.
Honestly if a book has 4.5 stars it could worth a try. I have my book 'rules' to avoid and there's nothing wrong not wanting read something you have no interest. Personally I like romance but I hate 16-20 old angsty stuff or even the 25+ yo 'i'm a virgin omg' kind ... so I feel your pain :)
I mean they're still fantasy books, just with a heavy lean towards romance. If your search criteria is just fantasy there's no way to know whether you want romance included or not. I get it, I'm tired of YA romance but once you know the authors to look for you can get related books that generally skew towards your preferred type of fantasy
Book reader community.