We never said, earn from gambling for living.
Isn't that precisely what "professional gambler" means? And the way you're advertising yourself strongly implies if not outright claims that "investing" in you is expected to be profitable. For example:
We are professional gamblers here to help you generate 10 to 50% profit from your investment on average.
This is incorrect and essentially false advertising.
We are saying we can help people who are losing regularly on gambling.
Except you can't! You do not have any advantage over them, they were just unlucky.