Forex is a totally different kettle of fish, trillions of dollars liquidity and near on impossible to be manipulated for any amount of time, including from central banks.
Now crypto is not liquid in the scheme of things and is pretty much totally controlled by a few.
Don't look at trading crypto as a job but more of a hobbie that can give some extra beer money.
Following poloniex coin threads could be a good start as well as what you mention in the OP.
then yepp you can not expect you can get a steady income as your job from trading this shit coin ,
but if you talking about bitcoin and other strong community altcoin like litecoin, dogecoin, ethereum etc ,
it is hard to be manipulated .