But, even though the greed is partly to blame for your loss, but the major reason for your loss is "bad luck" for which you were not responsible at all!
Luck is a big factor but being greedy would make it more worst because you havent able to manage on what you should supposedly gonna do in times when you are winning.
If you do let yourself do play further just because you are winning and aiming for more then thats simply greed.You do have some point though but i can say that greed does
really give out a big factor.
Hence, stop blaming yourself, move on, save money and gamble what you can afford to lose. Stop blaming and stop appreciating yourself. It's all random!
Thats when you do talk about luck-based games but if we do talk about strategy based one, then it would be an another story.
You would surely have the edge when you do know a certain game though.