These two things are actually very different, crypto is very unlikely to be stable (except stable coins) while forex is usually quite stable (fiat exchange between countries and has great trust). However, if you trade crypto, you will see the market open 24 hours a day, 7 days a day (unless a platform is undergoing maintenance), while when you trade forex, you may not be able to do it 24 hours a day, there will be certain hours for this open and closed (unless you use forex tokens). However, if you want to make quick profits, then choose crypto even though the risks are big too.