[ffr3]

It depends on many factories. Biggest ones is device fingerprinting, purchase behavior, proxies and cards.
It is hard to card gift cards because they have good antifraud systems, and they can find that you are using antidetect browsers like linkensphere and etc.
Second one are proxies. It is hard to get fresh quality nonblacklisted residential proxies with native tcp, also proxy speed is an important factor
Just make some more research and you will get a success