There is no point on trying to compare ourselves with other people because there is always going to be someone that can use way more money than what we can use, what we must care about is how much money we can dedicate to our gambling hobby and never going above that amount, if you can do that then you are fine, besides you have no way to know what it is behind the people which are making those huge bets as unlike you they may be addicted to gambling and they could be the ones jealous of you by being able to get fun while using so little money.
What we have to do is understand that gambling is not a good way to make money because there are losses that will await us as long as we play. You'll be fine if you can control yourself when you gamble and don't overspend, especially when you lose. But the truth is, more people spend more money trying to recover from their losses. This will slowly make them addicted to gambling, and over time, they will become addicted to gambling. If they have experienced this problem, they will not be able to leave gambling easily.
And it is because of this that we always need to keep our eyes open about our behavior when we gamble, back then when I still frequented psychical casinos I always noticed the people that seemed to be completely out of control, without a doubt they we are having the time of their lives but at what cost? It is likely those people woke up the next day lamenting all the money they lost at the casino, so we must remain vigilant and avoid something similar happening to us, otherwise we may make the same mistakes as those people.