Like any other economy, the crypto market is also affected by supply and demand, People are currently selling their holdings, or rather have sold it during the period that the price was high. What you are seeing is a very healthy correction that reflects (not all the time) the true valuation of the crypto industry. To be true ATM it's still higher that where it was last year. So just watch out and build your portfolio, because there's a good chance of this going all up after the correction.