We must constantly monitor the coins that we are the holders of. Now you can not earn a lot by holding one or more coins constantly. New good projects can give more chances to earn money, but there are few such projects.
I think that those who are actively engaged in cryptocurrencies do so. People who a year or two ago just bought some cryptocurrency in the hope of growth are now disappointed.
Recently, the hype around the cryptocurrency has noticeably dropped. But there are many fans of the crypt, they are sure that you can earn here and many succeed. And the crypto market has moments of good growth.