Actually no coins have moved from either address since 2021. There's 13 BTC still sitting at 38JSoBKFuAYXgvMAKsk8aHYmiMfuFS2AyA.
Re-reading this thread, the fact that you said this:
Ok. Can you confirm if this address belongs to MCM? bc1qaamrxr0s469970e9m9tea4d9ssa7vfd7uq9cqk
It's strange because the fees were accurately distributed to a separate address as well.
makes me think that either you didn't actually send these coins or else you have (or had at the time) limited knowledge of how bitcoin works... its a "change address", meaning the coins went to the sender's wallet... they would be reflected in your wallet balance and you wouldn't think you were missing them.
Seems like maybe they were sent to an address for which the private key is not known. 13 BTC is now over $1.3M, and the coins never moved...