$BTC : I think the best time to buy BTC is around $80k to $75k, because if you buy now, it's already high. Wait for a few months, and the traders who bought BTC at $60k will start booking profits. The same is happening with $XRP it keeps going down every time it tries to make a reversal. That's why, please save your funds now and don't trade in these cryptos. If you trade in them, the big players will eat your funds.