You can make money easyly in crypto just by doing long term trading, but you should understanding the trend of crypto market. If you predict the bearish trend ended and the trend will change to bullish, just buy good coin and hold it for afew month.
In my opinion, if you are a long term trader, better sleep rather than waiting for the Bull Run. But instead of sleeping, a more constructive work could be done which can make you good money.
Nonetheless, I believe that investment in long term could be very profitable because the market has always great chances of going up and up like we have experienced in previous years. Cryptocurrency is an ideology which will cover the entire world so do not be here only for monetary benefits.