The best way to anonymze your crypto after buying it from KYC exchange (If you have to) is exchange it with #monero on a trusted DEX (Desensitized EXchange) something like changenow.io and do couple of transaction in different period using your own node or an onion node.
After that you can keep your Monero or exchange it with your target cryptocurrency.
I'll prefer to buy #solana or #ethereum first then exchange it with monero, after that to your target cryptocurrency.
Notes:
- Send it first out the KYC exchange to your own wallet then to the DEX, don't send directly to it.
- The wallet before the DEX must be a new wallet, don't use an existing one.