You have two scenarios in the current situation on the market - that BTC goes a long way down or long way up.

If it falls too much, you'll "burn yourself" if you buy it at around 9K thinking it's going to grow now.
In case it grows significantly, you'll "burn yourself" when you sell it to around 11k thinking it's coming down.


These waves between 10 and 11 k must be repeated long enough to be able to conclude that you have correctly chosen the right time.

... certainly, it is not bad to ride "waves", but the final result is just written ... and there you realize that the "waves" are not easy to ride.
.