I've personally used a bitcoin mixer
https://yomix.io before, and I think it's a good option for those who want to enhance their privacy and security when using cryptocurrencies. Essentially, a bitcoin mixer mixes your transactions with those of other users, making it harder for anyone to trace your transactions back to you. Of course, like any technology, it's not foolproof, but I think it can be a useful tool for those who want to protect their identity and assets.