If you buy a bitcoin in the price of 9000$, yes it may drop, but we have clearly seen that this is what it does. It goes up and down. If you have 1 million dollars and buy 100BTC (900.000$) then the only thing you have to do is wait. Because someday it will pass that number and you will have profit. Am I wrong?
Why don't you consider buying BTC at 19600 at the end of 2018 and the current price of BTC in June 2020 - that is, about 2 years later, it's just about $ 9000 - you have lost 50% of your assets after 2 years? The price of BTC fluctuates every minute and it is influenced by many factors. Since prices are determined by the market, investing is a risky business, including investing in Bitcoin. Therefore, be careful with your decisions