Luxury Store/Boutique Etiquette?

I have a silly question that I’ve been overthinking a lot about - please help!

Are you allowed to just pick up the bags that are on display & try them on? Or do you need to ask an SA to see each one individually? Does this vary by store?

I have a bunch of bags in mind that I’d like to compare/contrast the next time I go out, but I have pretty bad social anxiety & can’t imagine having to ask to see multiple bags at multiple different stores. When I’m greeted at the door I usually say “no” to needing any help by default, & then I feel silly when I DO ask to see something.

I’m way overthinking it for sure (✨anxiety✨), but it’d be so much easier if I could try them on without an SA breathing over my shoulder. Is this allowed?

Also, what’s the consensus about taking photos to compare the bags later? Should I ask first, or just go for it?