You shouldn't be investing a lot of money into something you have not properly adapted to. The same process should be applied for a completely new trader; do your research, practice on demo, pick a strategy and start small.
No kidding, and I've formed the impression over the years from reading posts on the forum that a lot of people jump into trading (crypto, forex, whatever) without understanding even the basics of what they're doing. And it's no wonder that so many of them lose money in the process.
So as to whether OP ought to trade Forex or crypto, that's a decision that should be made only after you've become familiar with each one and it's also a matter of personal preference. Thus, nobody is going to be able to tell you whether you should trade this or that--you might hear opinions, but you've got to make up your own mind. And even after you've done all your research and decided on what to trade, you still run the risk of losing money. The advice you're going to hear over and over on bitcointalk is to not wager more than you can afford, and make that your golden rule for your own sake.
however the forex one is so dangerous and so slow to move that you have to use a high leverage in order to make any meaningful profit
That could well be true--I can't agree with you 100% because I don't trade currencies. But if we assume that you do have to use a lot of leverage in order to make a profit in forex trading, I'd stick to crypto if I were OP. Leverage has gotten a lot of traders into a lot of hot water.
