Just wave it off. I can personally attest to one incident after another of players who made horrendous decisions winning hand after hand, while sitting at the same table with a player who has been around a while, but can't seem to win on 20. It happens all the time. Naturally, the problem here is a momentary turn of events that one wouldn't want to count on repeatedly. Anyone can get lucky, but it takes some knowledge to be able to play and win on a regular basis.
Some people seem to be naturally lucky, while others appear the opposite.
Most of us fall somewhere in the middle. We have our lucky streaks and times when we can't locate our own toes. If you are losing steadily at a table, don't stay. Take a break to clear your head, go for a walk, change tables, alter the situation. That due factor has as much to do with reality as George Foreman winning the Boston Marathon.