Also, if there are any other CoinJoin services that are EASY to use (for beginners), please share!
I know some people had many complains regarding Samourai coinjoin implementation, and they are even calling it a scam, so be aware of that.
There is one more option that is in my opinion good alternative for coinjoin, it is simple to use and it's called
Mercury wallet.
Mercury is open source Layer 2 Bitcoin wallet for sending and swapping bitcoin privately, and it is based on transferring of private keys with something called statechains.
Here is one interesting talk about Coinjoins and Coinswaps: Collaborative Bitcoin Transactions from Bitcoin 2022 Conference:
https://www.youtube.com/watch?v=iydrfoxxAsY