If the Ethereum price drops to 50$ I will treat this as a crisis price below which it should not go. If this happens, I will buy it, because this price is a gift for someone who wanted to buy Ethereum for a long time, but could not afford it.
If you can afford to wait for your investments to grow I think buying the ethereum is the right choice. because the price is now very bad, and I'm sure takes a long time to be able to restore the ethereum price as before. But if the market is growing quickly and the ethereum also followed suit then you will get a big advantage.