My son has invested in crypto currency & has made some good money. However, as has been said above, it is basically gambling. It has no underlying value. People buy it because they think it will go up.
If you are a risk taker, It might not be a bad idea to put a little money in it. But you have to go in with the understanding that it is probably about as likely to go to zero as it is to go up substantially. Don’t put ant money in it you are not willing to lose.