I can agree that gambling cannot be trusted,because gambling is built to profit from us than to favour us financially.Gamblers who gamble with strict levels of prohibition are only very few.
Gambling is a process and casinos can be trusted if they are provably fair. Gamblers cannot be trusted with money because they have the habit of not paying back money they own.
Now when it comes to making money - never forget that casinos are running a business and a profitable one. The games on any casino are such that they might instill confidence to make money but in reality they are more likely to drain money than grant you money - the math is simple and should be understood first before playing.