Welcome to the forum!

A humming pump indicates something preventing the pump's shaft from turning.

You might try GENTLY rapping on the motor as it hums (I use the butt end of a hammer). If that works, there's a little corrosion on the contacts of the starter.

If that fails, I'd look under the pump, while it's running to see if there's a drip of water - if there is, the seal assembly is shot and you probably have rusted bearings.

We've talked about this a few times here and a search might help, now that you know the terms to use.

I'll defer to Poconos if it's the first issue (I wouldn't know about it, if not for AL ) If it's the seal, I can tell you how to change one, though the pump will be loud and just changing the seal won't fix the damage already done to the motor

There are a lot of great folks here that will join with me in assisting you!