I would like to know anybody's opinions about this.
It depends on which one you have a wider knowledge of the two ops, because if you choose the one with only a few ideas or what you know, rather than the one that you don't choose but have a deeper understanding in the end, instead of getting a profit, you can't do that.
You should be there because you know yourself better than anyone else, and for sure, there is your confidence, trust, or belief that you will get a good profit from the capital that you will use for either forex or crypto trading.