The best advice i can give, is stop!!! gambling for now. And use some time to understand how it works. From what you wrote it seems like you misunderstood how gambling works.
If you win some money, then the money you win is money that other people have lost. In this case you have been the one that have been filling up other peoples bankaccount.
If you still want to gamble, then please make a budget for yourself. Make a Maximum of how much you can afford to loose pr. Month or year. When you reached that limit please stop.
Every time you deposit money you should concider the money being lost, but there is a small change you maybe win some back but that is rare.
I wish you all the best, but your post got me worried. Remember every time you see a big win video, then there could be 10000's of videos of people loosing.