The market is falling sharply, I see signs of not healing, capitalization is withdrawn, should I continue to buy in the top 10 coin or should I pin down USDT and wait for new move?

It is better to be out of the market. To be in USDT or USD and observe. This will prevent unnecessary losses. You will have time to buy coins again. It is important not only to get income, but also not to receive losses.
Yes, in a way the wait outside the market until it will starts up again is a great way to be safe and cut your losses. But if everyone was to do the same then you'd only contribute to the market downtrend overall, wouldn't you? But I suppose in this community some people take the risks and continue on whilst others dodge and go for a safer exit.