it's less risky if you invest your btc in gambling sites it's more stable for your source of income.
Less risky? Having a third party control your coins, where you also depend on that entity to see its bankroll being filled up by people losing to the house, is far from a safe and reliable source of income.
investing in cloud mining is too risky many cloud mining has offering that you can gain more btc but all of cloud mining is a scam. don't trust cloud mining it's all scam.
Cloud mining is an industry that people should stop looking at. Mainly because of the many scam sites with unrealistic return offers and their nonsense life term contracts.
Putting the fact that the far majority of the cloud mining sites are a scam aside, I must also note that investing in legit cloud mining sites is also something you should avoid.
It's far from profitable due to the block halving and the constantly increasing difficulty, and thus you are wasting your time and money if you proceed to invest anyway. But then again, people are free to choose.