Many thanks for so many replies.
But still I do not understand how someone can successfully predict btc movement with use of TA. Just look at the situation from 11 of november. In 6 hours price dropped from 9050 to 8600. What showed in the beginning fall of price? RSI not overbought, OBV in line with price... even after fall to 8940 usd rsi showed oversold. And of course we are looking to past, so we know how the situation finished, but in the moment of price fall, how do you know if to sell ( price will keep falling ) or buy ( because it is the bottom)

?
I would really like to understand this.
https://i.imgur.com/kl4rKyQ.jpg