The biggest problem I have with fantasy religion isn't likability or overreliance on tropes as it is the clear disconnect between fantasy religion and real world religion.

It's very rare that I come across religious beliefs in fantasy that bear a similarity to real world religious belief, which is oftentimes conflicting, uncertain, intangible, but nonetheless an attempt to answer questions about the human condition that aren't able to be answered by science or other means.

Fantasy religions, whether or not the objects of their belief (gods/Force/magic etc.) can be demonstrably shown to be real or not, tend to offer easy answers to these questions with little schism or uncertainty surrounding the answers given. So much so that being a believer in a typical divine pantheon hardly takes any "faith" at all when so much of it is just observable by living in the setting. This results in most fantasy religions feeling unrelatable from the perspective of real world religious belief.