"Mixers" are scams because you trust third parties with your data and with your coins, what you want to do is use coinjoin to protect your privacy.  Coinjoins are non custodial group transactions, you can gain complete privacy on your coins with BTCPay Server's coinjoin plugin, Trezor Suite's coinjoin account, or Wasabi Wallet (for desktop).

Here's what a coinjoin transaction looks like: https://mempool.space/tx/d465033214fd2309dcce5a90c45fcaa788aa4394ee36debe07aad8d8a37907d2

Fees are very low, only 0.3% + mining fees.  Any input in your wallet under 0.01 BTC is not charged the 0.3% fee.