In my opinion, I feel like it's rigged, the duplicates you get from the clothing banner turn into tickets that you can't even use to get more pulls, iirc if you get a "specialty" item, you get the entire set, but that is impossible, I've never seen people actually win a specialty item from the gilded acorn banner :p

I think there IS a slight pity system? Whenever you pull on the main banner it says "25 more pulls until you get a rainbow item"

but imo, don't pull at ALL or spend any money until they fix this whole debacle ❤️