Gambling is indeed a high risk if we can not choose which gambling sites are reliable. OP’s advice and experience, good for us to consider,
because the gambling sites that OP has written here, are a list of sites to avoid. Not that these sites are fraudsters. That’s what OP means.
If we read the thread to the end.
This is the best reference, as I also don’t do this much analysis for any gambling site. But this will help if when we want to play gambling
in a lot of gambling. And we better not use the services of gambling sites listed in this thread.