People who like to sell near the peak and rebuy near the bottom

I’m curious what people do with the cash when they sell at the peak. Do you leave it in the exchange ready for 18 months later to start buying at the bottom again? Just take the cash out for tax.

In the uk if you withdraw it to a bank, the max my bank allows for crypto deposits is 10k a month so it would take me 16 months to put the money back in the exchange for example