Currently around 66,765 USDT.

I'm not focusing on the ups and downs, but whether this level is worth engaging.

The most important thing to remember with these kinds of trades is not emotion, but discipline:
First, look for a 5-minute chart to re-establish above the key level, a 15-minute chart to break above the previous high, or a break below that forms a higher low—these all indicate invalidation.
Next, if BTC is weak, altcoins have room for a waterfall decline; if BTC shows a strong upward trend on the 15-minute/1-hour chart, just give up on shorting.
Also, not every fluctuation is worth participating in.
Finally, don’t chase impulsively in the middle; wait for clearer levels.
The entry point I’ll watch for is: 66,245 USDT.
The take-profit level I’m watching is: 70,252 USDT.
The point to exit if wrong is: 64,642 USDT.
The most expensive thing in trading is never the stop-loss; it’s refusing to admit you’re wrong.
Keeping the rhythm is more important than rushing to prove yourself.