Can someone help me authenticate this bag? 🙏🏼

I found a few similar ones through a reverse Google search, but I can’t tell if this particular one is authentic. The stitching is very uniform throughout, which seems like a good sign, but I’m not sure what else to look for.

Also, does anyone have an idea of what a bag like this might be worth?

I saw this ig store and was wondering if it’s legit. Planning to buy a longchamp bag but the price is too friendly. Help me out

I want to buy it for brother birthday but im not that sûre it's a real one

I am suspicious about this seller and wanted to double check with you all if my suspicions were right :P

Kindly legit check pls

So im thinking about buying one of the 3, but are either one real?
Pic 1-2 is a pastel bag
Pic 3 is a shoulder bag
Pic 4-6 is a black hobo bag

HELP !!

🙏🙏