If you buy a 5.1 surround, the diaglogue is mostly from the middle speaker (of five). You can adjust the relative volume of each speaker so the middle speaker is louder than the others, allowing you to hear the dialogue much better.
Worked for me with my artillery ears.
Then it’s not my hearing ... or is that an adjustment fix ?
I read somewhere that adjusting the bass to minimum and treble to maximum helps.
It does seem to help a little.