Mixers are really not needed anymore. If you want to mix your coins, simply register with any exchange, send your coins to them, create a new wallet, and withdraw your coins from the exchange to that wallet. Bam! Your coins are now untraceable.
all exchanges keep logs.
If you send btc to adress 1. And then exachange to eth, then exchange to monero, then exchange to bitcoin.
The exchange will see it all.
Use mixers or exchange btc to someone "offline".
If you send btc to me directly and i have an unregisterd wallet, they will not know who i am unless my wallet gives out my ip. Use a good vpn like mullvad also.
Legit mixers are
www.heliosmixer.com cryptomixer.io.