eBay sniping is waiting until the last few seconds of an auction before placing your bid, hopefully saving u money by not drawing attention to the item.
Automated sniping saves you time, u do not need to be sitting at your computer when the auction ends.
Your bid is submitted to eBay just as if you’re bidding manually, eBay’s proxy bidding system takes over from there, raising your bid until it’s the high bid or it has been exceeded.
Sniping isn’t magic, u still must have the highest bid to win