Hello guys.
Bought some btc miners(s19 95T) and gups in the last bull market before. Now it is relatively difficult to bring the return to capital in this bear market

. Maybe I should not have bought at high prices in the bull market before, so I think it is a reasonable choice to buy machines in the bear market instead, but what is the specific time for the relative price dip for the crypto miners? If it's the time, when there is no profit generated for the miners which is considered to be the current time period?