Do you have a large number of inputs (small transaction towards your wallet)?
Also if you are not in a hurry, you may want to wait until the week-end with your transaction.

I could show you how to set the fee manually, but then you'll set it to 1 sat/vbyte and then you'll complain that the transaction is not confirmed.
I think that your best bet is to try in the week-end and then keep an eye on it. Also keep an eye onto https://mempool.space/ and see when the fees fall to 5-15 sat/vB (now they're at 105-256 sat/vB)