No investment can be a smart investment unless you make a profit out of it. The crypto market has been very much vulnerable this year and almost all the cryptocurrencies are down this year. Now, Cardano can be a smart buy right now if you are willing to hold it for a longer period.
However, if you are looking for making a good return by the end of this year, then Cardano may not be a smart buy as the price of Cardano is predicted to remain below $1 by the end of 2022.