I follow a Celtic Pagan group on Facebook that often discuss this exact type of thing. The consensus view is that pagans don’t typically seek out their god(s) so much as their gods call out to them. A lot of them claim they began their path after feeling deeply moved by/drawn to or called by the wilds, or after having vivid (often recurring) dreams about these sacred places or associated animals. That resonates with me because when I think of these secluded stone cairns or places of worship off the beaten path, something stirs very deeply within me that almost feels evident of a past life or some lost thing that I no longer have. Just this incredibly deep feeling of reverence. It sounds like you’re dealing with the same thing.