A few discrepancies. Are you sure you sent out funds from your wallet? Because the transaction shows a timestamp of 13th December - 11 days ago, and not 4 days ago as you say. Also if your wallet address is 3AzWaxhLJBdxPx7NakZ8F9XbmP2FoGg6n3, then blockchain doesn't show any outgoing transactions, rather the address has an incoming transaction, as shown by CyberKuro. As it's unconfirmed, your wallet should show zero (with 0.20762112 BTC unconfirmed).
You cannot revert the tx, Bitcoin txs cannot be reversed. Acceleration is next to hopeless since mempool is still so high and your tx fee is extremely low, virtually 0 sats/byte. You can still try at your own risk looking here for people offering acceleration services:
https://bitcointalk.org/index.php?board=52.0 You can see options like CPFP or RBPF from this sticky:
https://bitcointalk.org/index.php?topic=1802212.0 but you can only do them if in fact you were the sender of said tx.
If you're the receiver, then you have to convince the sender to try above methods. Otherwise your only hope is to wait it out. Either it confirms when mempool is low enough - I'd say at least two weeks, or the tx is simply dropped from the mempool. Seems this is about to happen, since it already shows as expired from one block explorer (Cyber's post).
