Do you own the private key of the address that SENT the transaction in this case "37p9pUugydmoLpQyFLLqGAgjWmUFERa1Pq" if you have it, you can try CPFP (Child Pays for Parent) which means you will be making another transaction that has a bigger fee (such as 0.05 BTC / higher than 201 sat/b) which should solve the problem of not being confirmed. If it does not confirm for a while it will drop from Blockchain Mempool and coins will be returned to the same address anyway.
I have a question about that last part.
I did a withdrawal from another site, so I don't control private keys. It has been 13 hours now.
When it will be removed from mempool, and the coins will be returned, will the tx still be visible on blockchain.com?
Also, if the transaction is cancelled, and it was sent from multiple outputs, will all parts of the transaction be returned to each seperate address?