I also traded forex before too, it's more inclined towards fundamentals any Red news FOMC, BOE, ECB news etc will always mar any trading strategy, thus forex traders has to get updated everytime before trading, I wasn't getting good profits rather losses, thereafter ported to crypto trading where I am having a good time trading with some small funds in order to learn every aspect of it, eg spot, margin trading not leverage trading and so far it has been a wonderful experience, though volatility in cryptocurrencies is far higher than forex crypto traders has to trade with caution.
I only "tried" forex a few times back in the day and this way before I got into crypto (about 2010 I think) so I could say that I never did them together. However even with that in mind I remember that Forex wasn't something that I wanted to do. It is not a long term investment type of deal, you do not really end up getting something in your storage and just lock in there for 10 years and come out rich, it is not like that at all.
It is a traders business and you need to be a damn good trader to make any profit as well (meaningful profit). If you really want to compare the two I would say that there are plenty of people in crypto that trades just like they are in forex as well, so it is not really that different for THOSE people. However for people like me, I have to say it is vastly different, it is not even remotely close for me since I am a long term holder.