Pump and dump are very natural in the crypto world. you don't need to be panic. if you are a long term investor of ethereum plz don't panic. because its the queen of the altcoin. just add more ethereum when it dump 
personally I like ethereum. of course I am holding a few there and trying to add more ethereum when it dumps more. my first target for ethereum is $500 and 2nd target is $600 per ethereum.so anything before $400 ethereum is a blessing for mine
I also like to invest in Ethereum because this coin gives me huge profits and I have never felt disappointed in holding this coin. personally I like ethereum. of course I am holding a few there and trying to add more ethereum when it dumps more. my first target for ethereum is $500 and 2nd target is $600 per ethereum.so anything before $400 ethereum is a blessing for mine
I can use Ethereum in investment to earn more ETH and DeFi projects are a great opportunity for you to do that. However, the value of Ethereum will depend entirely on the value of Bitcoin so if the coin fails to rise, the market will inevitably stand still or correct.