If your transaction still unconfirmed you can abandon or delete the unconfirmed transaction then you can create a new transaction with higher fee.
Read the quoted below.
Bitcoin Core
Bitcoin Core makes making Full RBF transactions very easy. Simply go to the transactions list, right click the transaction that is stuck, and choose the "Abandon Transaction" option.
If that option is greyed out, then you must go to the Bitcoin Core datadir and delete the mempool.dat file. Then restart Bitcoin Core with the -walletbroadcast=0 option and then you should be able to use "Abandon Transaction".
If the above two options fail for some reason, then you can start Bitcoin Core with the -zapwallettxes option to clear all unconfirmed transactions from your wallet.
Once the transaction is either Abandoned or cleared from the wallet, you can simply go to the Send tab and send the Bitcoin again but make sure that you include a sufficient transaction fee.
Source:
https://bitcointalk.org/index.php?topic=1802212.0Then always check the updated fee here
https://bitcoinfees.earn.com/ make sure to use the fastest and cheapest fee or higher to make your transaction faster.
I know, but this requires to change the fee by hand all the time.
The miner's fee does not have a fixed value it always depends on the network.
If you don't want to change the miner's fee from time to time you must set your miner's fee to the higher amount per byte. So, you don't need to replace the fee from time to time.