Oscilator RSI- Crypto

Low price on point A, elevated volume, is confirmed by reviewing stochastic RSI where we can see stock is over sold, and this will create variation on pattern and add volatility .
Same case works for point B, with a higher variation on price, and lower volume, but volatility is created, and stock is oversold.
Point C, has a price increase, which confirms volatility, and stock is over bought.