I agree with your suggestion, the price of bitcoin is down and this is the right opportunity to buy it. 2 or 3 more years you will get unexpected profit, but remember DWYOR.
If we still have a lot of belief in bitcoin, we can still buy and accumulate for the future, that is the common thought of all bitcoin fans and crypto but in my personal opinion, you should not think so simple, buy and hold then we will be profitable, there are not as many good stories as we think. Especially in the world of bitcoin and crypto investments, every hour and every minute the market will occur a hundred stories, thousands of stories, and the situation seems to be bad in the near future, we wait a few years, I'm afraid we can not laugh, we may cry like a child