You should know one thing that gambling is not an investment, but you need to spend money to get entertainment. If you think just with experience you can win money from gambling then that is the biggest problem, and you may lose a lot of money in gambling. I suggest don't ever use gambling to earn money.
Well if you select to play yes its not investment, but if you select to spend and put up somre money in the side of the house well can be callee gambling, and although we surely gonna lose some money in gambling but still many people gambles their faith to hit the big jackpots to earn huge instant money from it, you cannot actually tell to people that they should not used to play in gambling since sometimes gambling can help depends on criteria you are unto.