Any way to find many tor addresses ? like stats ...

I was wondering if it is possible to find tor addresses, besides finding them on lists and search engines, crawlers, etc.

I assume for privacy / security / encryption reasons, it is not possible to see visited onions by running a relay / bridge / exit note, is it ?

I am not asking about ways to deanonymize users, but rather eider see how many individual sites are visited, see new sites, or even see which sites are most popular. For reasons like that. Among many things this can be used to create a reputation score of popular onion urls, so users do not visit fake clones of popular onions.

On the relays / bridges / exit nodes, etc you only see encrypted data but not onion address, correct ?