I use coinjoin, but when I have to make swaps, then I loose privacy again. Guys, how can I trade BTC -> Stablecoins -> BTC without loose of privacy?

If I need FIAT I can trade on an KYC exchange a coinjoined BTC, then I use this FIAT pay taxes and everything is ok.

But what happens if I what to just sell btc for stable and then buy btc on btc bubbles. After Coinjoin all of your btc how to trade without a privacy loose??