$ETH 4-hour RSI (14) is 24.7, entering oversold territory, with the current price at 1951.9.
Oversold means prices have fallen sharply in the short term; it doesn't mean a bottom is imminent. In a weak market, RSI can remain below 30 for a long time. A bullish divergence is more worth watching: the price makes a new low, but RSI does not.
Indicator lag is normal, so don't expect it to catch the exact highs and lows.