Bidding by mistake is not a reason for retracting a bid
There are only three reasons and that is not one of them
It wrecks the sellers listing
You can be reported for retracting and they show on your account
https://www.ebay.co.uk/help/buying/bidding/retracting-bid?id=4013&norover=1&mkevt=1&mkrid=710-153696...
