But as you said, we cannot always win because that will depend on luck, and luck will come only to the right person. But I don't think that if we play big, it can help us win because that will only risk our money to get a big loss. Patience will be needed in this game because we don't know when we can win, but the important thing is we can limit the money, so we don't have to lose much money. It is what the gamblers cannot realize, and they still use more money to play without cares about how much they lose. But it is hard to survive in the gambling games because if we only wait for luck comes, that will need too long before we can lose all of the money. So better we stop before it's too late.
Win depends on many things, which factors will prevail depend on the game you choose to play. To survive in the long run you need to return and try it again, and every time you try again you need to have more aggressive approach, it's the only way to win and have profit, if you play with the same odds and bets it will take time to recover, but you lose your money slower.
I don't believe in stopping, many times I lost my entire bankroll, but many times with my gambling style I managed to hit something big right before losing everything, like I had just for few more bets and boom, big win! You recover what you lose, plus additional profit! You need to relax with the money you plan to spend on gambling!