Gambling to me is like going to a movie theater and watching a movie. Do I have a strategy to "recover from all those losses", I mean, the money spent on movie tickets? No. I think, no one does. The only difference between playing slots and going to movies is that accidentally you can earn thousands times your bet with the former. But "accidentally" is the keyword here. You can't, and you shouldn't, count on it.
Having this kind of attitude to gambling is what it really requires to play the game and whatever is the outcome you will be happy with it and not break yourself down because of losses. There are many examples that gambling losses should be made for losses to learn from. What about money spent on frivolous things or products bought and stolen or not received after they are bought. If we keep dwelling in the losses from gambling, we may end up with heart attacks , it is suppose to be fun game.