There are ways to avoid your transactions being tracked. Coinjoin transactions, purchasing a miner for non-kyc bitcoin, payments on the lightning network, etc

Also, they can do all of those things, but you can setup your private keys in a way that your family will still have access to the bitcoin even if you are killed

"Lightning" protocol and other sidechains don't deliver on their promises as well as the base bitcoin protocol.

"Help" with privacy isn't enough, you need something that is bulletproof and either resistant to you screwing up the OPSEC or otherwise you have to get OPSEC right all the time.

Using the same mixer as terrorists could get you charged under anti-terrorism laws.

Before you use one I'd ask you to ask yourself if you want to be complicit in large-scale tax evasion, international sex trafficking and all sorts of awful things that make the mixer more than a game where you can imagine you're important because you're a spy or something.