In my opinion, the most difficult period for ethereum was the second half of 2018. Then the price of ethereum fell very low as a percentage even in comparison with other coins. Now the situation is already improving, I think that after the successful introduction of improvements to this coin, the popularity of ethereum will begin to grow.
The whole effect of the improvements we can see only when there is a bullish trend, and yet in a weak market the effect is almost invisible, just added a little stability