I've had a friend who was a victim of fake gambling site. He became greedy because most of the time he wins on his games without knowing results are manipulated. That gambling site is gone already at the moment but be careful because surely, there are lots of them.
Many cases of scams occur on mid-level gambling sites because the reputation of the gambling is not trustworthy and don't be influenced by the high winning factor, maybe the team used that strategy by changing the script code to increase the winnings higher, so the winnings were fake and manipulation because it was proven that the team did not respond complaints from users and users have not been able to make withdrawals from users.
So to avoid such incidents, make sure you join the top gambling casinos from the recommendation list on the forum, but the risk is still there and make sure you are ready to accept the risk of losing funds from gambling.