Options Menu doesnt work after scene change

Hello! I recently created an options menu where you can make adjustments to your audio volume, etc. If i click play, the scene changes and everything works just fine. But when i change to the main menu scene and click on settings, i cant make adjustments. I can drag the volume slider but nothing happens…

Well what I would do is create the variable static such as:

public static float volume;

and what this will do is keep the variable the same through all the scenes as well as have it able to be controlled by a slider.

I had a problem extremely similar to this before. The solution for me was to make sure that there was an event manager in the scene. Do you have an event manager in the main menu scene? If not, that might be the problem.
I hope this helps!