Device volume key trouble

[NoNameLeader]

I would like to find a solution for this problem

When you play spotify on your other device, ofc your samsung device's spotify is on

That is not a problem, it is good, since we can control ther other device's spotify from afar

But the problem is, when I click on the volume button, it always changes the volume of the spotify first instead of the samsung device's main volume

I am not able to use the volume button for the samsung device's main volume, I need to enlarge it and drag it up or down manually