The present state of the market is really an opportunity to enter into the market, if you are still afraid of entering the market now, you do not have reason to complain of missing out later. Make a good research and make use of the opportunity, then you are good to go.
Yes, I would tend to agree that this is a perfect opportunity again, specially a lot of good altcoins in the top 10 are declining and making a healthy corrections. If you're a smart investor, definitely, this is the viable situation to enter the picture.
I know that it's really hard to give financial advises, after all we are speculators, but coins such as ETH, Chainlink, Dot (which I have personally invested even prior to the decline), should be look at, specially if you are going to be a long term holder.