On the 4-hour chart, it’s clearly visible that the highs keep moving down, the lows are continuously being broken, and the short-term market is in a downward channel.

The earlier rebound was only a pullback for correction and doesn’t count as a trend reversal. The price failed to break above the 67,255 high, so any subsequent rebound is still expected to remain bearish first/primarily.

When the price spikes up briefly and then is blocked, it falls again. It has already broken the 65,000 level, and the rebound strength is relatively weak.
For BTC, during the 65,300–65,800 rebound range, short BTC; the target is 64,000. ETH is moving in sync with BTC, so you should also short ETH when the price rallies, the same way.
$BTC $ETH