Try to invest in casino or gambling bankrolls you have assurance that they will not run your money unlike those cloud mining owners many of them are all scammers don't try to invest with it. Before making investment make sure you will a find a good review on that gambling sites
You forget to include a word for it, invest only with those casino's that are reputable, trusted and running for years already.
It's a very important factor if you want to invest into a casino. Also look for reasonable return of your investment.
Because there might some that will indicate, guaranteed a big amount which will mislead a lot of investors.
Look always for those that has a solid support, devs and has a very good review from the community.