Yeah cloud mining is not advisable. Investing is also not steady as you would have to wait for quite some time for your money to grow. If you're unlucky enough, you may not even get your investments back.
All investments are risky but the risk can be minimized if you do proper homework before investing your money and its always good to diversify your investments instead of putting money at a single place and if you do a proper research before investing then you can make good profits in future.
In investing we should not also be greedy, we have to learn that slow but consistent income is always better.
In investing, we should also be realistic enough to accept that we might also lose on that investment - after all, the only sure thing that will happen in this world is that we are going to die sooner or later. Other than that, there is no really assurance in every investment that we do. Well, it is then up to us to mitigate these risks..
for investment should be approached very carefully. Do not try to hit the jackpot. On the contrary, it is better to get a small but steady income with minimal risk