I think the best thing to do is wait for the prices or the market to be stabilized before buying. The reason is if you buy now and the prices are still going down it's a loss for you so it's better to wait than to have loss. So, you can't tell if it's a great opportunity.
You said that oh,wait the prices are still going down but what do you do in another situation?Today, I personally see a good opportunity to earn very very cheap money from this 'inflation' and i don't care if prices go down because i believe that its temporary,maybe you are right but its not absolutly good approach because you may be out of the game,of course today is not enviable situation for bitcoin holders who bought it when price was 20000$ but its a good opportunity for them who have nothing,Evaluate the facts from history and i think you will change your mind.