I feel like, if you’re going to play a souls game for the first time you should play Elden Ring, because it’s the kind of game that’s only as hard as you want it to be. Elden Ring is in this interesting spot of being open world, meaning that if a particular boss or area is too challenging, you can fuck off and do something else for a bit, then come back when you’re better leveled/better geared/more practiced etc. I feel like you don’t really get this with other souls games, which are more linear in their structure.
that said, I don’t think any souls game is really an insurmountable challenge, especially Bloodborne. sure, you might suck when you first start it, but once you get the hang of the combat, dodging, etc you should be fine.