No matter how a win is small we need to be contented with it . If we find it difficult to appreciate small wins it can lead us to problem to always put money in gambling. Appreciating the small win always is also a win against greed. I think the amount you played with is what you can afford.
What do you want to appreciate? You used your money to bet, the money that you can lose, then why appreciating the winning? Who to appreciate about it? I understand you though, you mean we should be contented with small winnings. But this is betting, we have to be careful, someone can have meaning small winnings, but a single bet can take most or all the money won at ones.