I bought some XMR on LocalMonero platform on September 1. The seller completed the trade by sending 2 XMR to the receiving address of my local wallet, that is, Monero GUI Wallet.

On September 3, I sent 1.4 XMR from my local wallet to my account on LocalMonero.

On September 4, I paid 0.5 XMR from my LocalMonero's account to a seller of digital services.

First question: Can someone trace the 0.5 XMR back to my Monero GUI Wallet?

Second question: Is LocalMonero a mixer/tumbler for XMR coins? If your answer is "yes", I assume that AgoraDesk is also a mixer/tumber for BTC coins?

Thanks for your replies.

P.S.: I searched everywhere for answers to the above questions on the whole of this forum and found none; hence this post.