When we want to recover back our losses, it's not often because of greed but I think it is more on the feeling of unable to accept the fact that you lost your money by playing. The eagerness to recover it is a human nature since we don't want to give up the money especially if our main desire when we decided to use it in gambling is to gain in snap (and that's greed).

Well, it's understandable to have such intention everytime we face losses. However, it's not a good habit since it can only lead to further losses if you can't control yourself. The reason why it is crucial that before you use your money in gambling, be aware of the consequences especially if you're not fortunate to win.