How to use Vanilla egift card?

I got a $500 visa vanilla e-gift card but everywhere I try to use it, it gets declined.

I’ve been looking at methods to convert it into cash but it seems like they really cracked down on this.

Is there anyway to actually use this or convert it into real money?

I don’t really wanna load it onto Amazon just for it to sit there, unless I can “exchange” it for another card that is widely accepted.

All response are appreciated, thanks!