I see no difference between trading and gambling. I think the only difference is the time frame. In gambling, you can get your results in an instant. While in trading, you can wait for days/weeks before you sell your coin. The instant of you selling your coins in trading will decide if you get profit and how much or you get less than what you've invested. Nevertheless, trading would always be better than gambling because you can do tons of research first about a coin before you invest on it.
I see somehow there is a similarity in trading and gambling because there are gambling games can be studied or research to gain some knowledge that can be useful for you to get the advantage, and I am saying sports betting gives you that opportunity. In addition, sports betting provide a leverage for the bettors to do sports arbitrage which has no risk which will guarantee you a win everytime.
We can consider trading as gambling since the complexity of trading that so hard to predict, as the result we can get profits or loss our capital. I agree that in gambling you can do some research first before betting, like in sports betting. It provide better chance to win, not only depend on luck but we can look at the history, condition and guess which one will win.