I have seen the price of bitcoin is very high and has exceeded 15000 $ for one bitcoin, and now the price of bitcoin is under 10,000 $ and maybe this is my chance to buy bitcoin as much money as I have and hope to get enough profit for my economy in the future.
am I wrong with this step?
Looks like you are dependent and expect a lot in Bitcoin. Actually, we may expect a lot, it's just that you have to think about your readiness to invest in bitcoin. Bitcoin can't be predicted, the price fluctuate and changing at any time. so, you have to be ready to lose besides being happy by getting big profits, of course.