Yes,I found success (win) in gambling many times but most of the times I lost,just understand the many and most so totally we are going to lose our money more than winning here,so if your intention is to make money then invest on something with less risk.
Yes, you are right people should focus on different other things for investment in order to be safe but whereas through gambling most of the time you will be in loss. So don't think that gambling will give you higher returns but ultimately you will lose. To find other possible option where there is less risk involved in it.
so it is better to have an investment than gambling to find success, we can choose any investment which can give us a profit in the long-term. playing gambling cannot give success, and as other people say, gambling can make us losing a big amount of money without any chance to get success. but I think we can also invest with the gambling sites because if we invest with the house, I think we have an opportunity to make a profit which means, we can get success in the gambling.