Welcome to the space.

I'd say that we are comfortably in a bear market right now and the truth is that no one knows exactly how large the drawdown will be.

Our best guess is probably 60-70% for most coins, but some coins can obviously outperform depending on their fundamentals. I would strongly suggest that if you are looking to invest in ETH (which is a very good idea at this stage), you should probably look into Dollar Cost Averaging instead of trying to time the bottom.