Secondly, buy external speakers that plug in like a headset and run off a/c. The tiny speakers in laptops aren't very loud to begin with and deteriorate over time.
I have a laptop that was made for Windows but I'm running Linux on it. In most cases, Linux can't use the Windows sound card drivers and the Linux substitute often only produces very low in volume. I added some Logitech S150 USB speakers ($15 at New Egg) and have plenty of volume for anything short of rock 'n roll.
Turning up the volume might be chasing a solution because you could inflict more hearing damage with the higher volume, which would cause you to need to turn it up still more. And so-on. "Real" hearing aids don't boost all volumes, only those frequencies you're deficient in, and the boost is limited to levels that won't cause more damage.
Thanks for your concern.