Everthing that based on gambling sure has some risk, if there is no risk you wont be able to get some payment though. Btw you said investing is risky because you lost all of your coins there. This doesnt make any sense though. If you lose all that is suppose house win and if you invest there rather than gambling, you will sure get some profit so I dont think that it is really risky besides investing on trading has a slow and a little profit compare to invest on gambling