This question could be answers with a scenario like:
Firstly, entrusting your money with a corporation or a group of people you don't know much about but you think that they have a reputation and experience to ensure that you gain interest on your money. This is how investment with the banks work
The second is to invest your money in a venture where you don't hand your money to anyone in particular but the money is being passed form one person to another. So everything concerning this investment will be based in your own discretion. This is how investment in Cryptos work.
So there is risk for both but to ensure minimum risk it could depend on the bank you are investing with or the cryptocurrency you're investing in. For crypto investment your discretion and experience also matters.

Bitcoin is more risky. Because we don't know what will happen to our money if we put it in bitcoin. And everything that is done in the internet are prone to hacking. So i would prefer to put my money in  the banks rather than in bitcoin.

I think most of people understand that bitcoin invest is very risk more than bank, just only 1 day, your account will change very fast, even 1 month you could lost 50% your accout  but beside you are also have high profit in a short time.

To be inside the quality side to address hazard, you have to be well endowed in understanding in that discipline of operation. You cannot put money into Bitcoin without knowing whatever about Blockchain, th crypto marketplace or Bitcoin. In conditions like that, you best boost your risk of losing your investment as you can turn out to be making an investment on rip-off platform.

In your country .. and about that bank investment it is a scam on the investor and the bitcoin investment is more secure at least you can exchange it anytime you want to and you completly have the full control on it .. but that bank investment are much more scam then risky comparing the bitcoin.. that i think ..

I think bitcoin is more risky than bank its because is not easy to audit the bitcoin transactions and you cannot knows who is the person beyond that transaction does not like  bank transaction you can notice you is the person beyond in every transactions so you have the guarantee who is accountable if something happen.

I total agree with you that both Bitcoin or bank investment are risk. If we store Bitcoin, we can get hacked at anytime, or the price of Bitcoin can go down and we will loss. But banks are also not safer. The banks can be bankrupt and at that we loss all of money we deposit in that.

Bitcoin is more risky of course. But if you want to look at the profit side of the two, Bitcoin will give you a world more profit than any bank investment such as savings deposit, time deposit, bonds, and so on. Of course, with a bigger possible profit comes a higher risk also. That is always the equation. There is no easy money in the world of investments after all. Banks are more secured and safe because they are operating under the strict compliance of the law.

Right now, its Bitcoin which is risky but if bought in small quantity, it might be beneficial in the long run. Keep invested. 

Crypto is much more risky in comparison to ban investment. But still the demand for crypto is increasing fast as it gives very good ROI.