Transactions are irreversible. It’s just stuck on the blockchain, and it’s highly expected that low transaction fees are the cause of the delay for it to be fully confirmed. I have done that before on a low transaction, and it took me a long while to make it confirmed until someone suggested for me to use a Bitcoin TX accelerator. That would solve the problem, but only a limited number of users can use it every hour.
That's why in every moment that you are trying to make transactions on Bitcoin, I suggest always check these sites first before deciding to transfer your Bitcoin to another wallet. (
Mempool and
Johoe's Bitcoin Mempool Statistics ). To know what exactly the required amount by the network needed if you're in hurry and I don't think this TX accelerator will help much more seems they already rebroadcast your transaction, I much prefer to use (RBF) Replace-by-fee for the stuck transaction due to causing a low fee.
But I rarely heard that about transactions get rejected by mempool by low fees, it will always be confirmed but it takes a couple of days or weeks.