I Guess I'm Gonna Have to Learn About Lightning Network

I'm mostly HODLing the BTC I have. Get low, spend high is my philosophy.

But I did initiate a transaction about 11 hours ago and forgot to set the fee, meaning it defaulted to a low one and is still stuck in the mempool.

It's not a big transaction ($20 USD or so at the time of the spend), nor is it urgent. I can wait.

But presumably there will be times when I don't want to wait.

Anyone have an opinion of Lightning Network for such times?