They both might share some common elements, but they are contrasting activities. With trading you often need strategic decision-making, analysis and research, while gambling is all about stakes. Crypto trading offers vast opportunities and risk free events like KCGI trading contest unlike gambling where you only rely on luck and chance
You can categorise both as game of luck and game of skills. Trading is not completely game of skill, as some luck factor is also involved here. Similarly gambling is also not purely game of luck, as in sports betting you need some skills to analyse the game. So yea both are different things with some similarities and differences. In gambling the risk is more while in trading the risk is comparatively less. So choose what you want to do, based on your risk intake capabilities.
There are different types of trading, and you can't compare them all with gambling. I know that futures trading and options trading do have some similarities with gambling because you can also lose everything that you have up at stake, but even then, if you place a stop-loss, you won't lose everything but only a portion of your capital. But in gambling, if you don't win, you lose everything you had placed as a bet because it is all about your luck, that's it.
And I wouldn't even compare sports betting with futures trading even if they both require both luck and skills from the user because in sports betting, if the match is over and you lost the bet, everything is gone, but in futures trading, if you use a risk-management technique, you can save yourself from excessive losses.