Very low sound in Windows 10
Assuming you have vanilla Realtek audio, this should work to some extent.
Open the Sound menu (as shown in your second screenshot).
Right-click on your speakers (or the audio output you want to amplify), and select Properties.
Go to the Enhancements tab.
Check the Loudness Equalization option.
This makes quiet sounds louder, loud sounds quieter.
At the Sound Manager, like the one pictured above, click on "communications", then click on "Do Nothing". That should solve the low volume problem.
Good Luck