Behind the fall is the correction of bitcoin. It goes down and the whole market also goes down but I think this is a temporary phenomenon especially since the Ethereum development team is doing an update under the name Ethereum 2.0 and there will be a hard fork ahead.
The main thing is that by the time of the update the market began to recover, only then the effect of the update will be maximum, otherwise everything can be in vain, at least in the beginning