Mining is a good way to earn on crypto, it lets you earn even if the currency price doesnt go up significantly. It pays off relatively quickly and then you can just have a good profit off it. Be careful with what you mine - some coins mining difficulty can spike wildly
Mining is not profitable again if you are not using large scale mining rigs to mine worth POW coin right now. The majority of coins are increasing a lot on the difficulty compared with the last year.
It's difficult to choose the coin which really profitable to mine if you are not coming with large scale mining rigs to battle to earn more and more hash power.