Every coin is risky even cryptocurrency as a whole is risky so due to risk we cannot move away from profit but in fact we should filter coins through investigation and then choose wisely. Not every coins is profitable but this is also true that not all the coins are unsuccessful. Bitcoin is less risky as compared to other coins but as we see it during bear market then everyone will be afraid to loss money because if price of bitcoin goes down then the down price is more as Compared to altcoins.
Patience is the strategy which can minimize this risk and one day you will see a green market but for it one should leave trading and accept investment because the option of patience is not suitable in trading. I don't think that all the altcoins are risky as you can take the example of Ethereum which is also profitable as that of bitcoin.