Simple. The global economy deteriorated because of COVID-19 and the Russo-Ukraine war, while a major crypto exchange (FTX) collapsed. This caused Bitcoin to decline massively in price, taking along ETH and a few other cryptocurrencies down with it. You can see why the PoS upgrade had little-to-no effect over ETH's market price. If you really want to see ETH go all the way to the moon, then Bitcoin needs to rise first. Otherwise, don't count on seeing a return on your investment anytime soon.

For what I know, investing into crypto takes time and lots of dedication. There's no such thing as becoming a wealthy person overnight. Good things only comes to those who wait. I think ETH will go way above $5k once this is all over. If you keep buying ETH while it's still cheap, you'll be able to reap the benefits at a later time. Ultimately, strong hands will buy and "hodl", while weak hands will sell. As long as you don't put all of your life savings into ETH, you'll have nothing to worry about. Just my thoughts