A lot of depends on potential of the coin and how useful it is.
Cryptocurrency is very volatile. It is good for trading.
But for long term investment coin must be useful.
It is necessary to evaluate the future potential of the coin.
Now there is a big demand in nature protection, that is why the project that protects the planet from pollution like this
https://twitter.com/liquidearth_nft/status/1502269439785541633 has a good potential for investment.
The most important is to create the demand in cryptocurrncy. Now cryptocurrency is actively developing and the demand in it grows.
Also grows the adoption of cryptocurrency. That is why many people believe that cryptocurrency market will continue to grow.