If sending the transaction with the lowest possible fee, which is 1 sat/vB, would cost more in fees than it would transact, than you can't do anything since the amount is too small and not worth using/transacting.
Did you set the lowest possible fee?
Also, did you check how many inputs your transaction is using? There might be lots of small dust UTXO's which increase the transaction size and therefore doesn't make it worth to transact the other non-dust UTXO's ?
What is the size of your transaction, how many inputs are you using?