Update on this:
I managed to create a workaround by using autohotkey program and creating a script:

if WinExist("Zoom Meeting")
WinActivate ; Use the window found by WinExist.
Send, !a
MsgBox, "Zoom Meeting" not open.

I turned that script to executable with autohotkey tools, created a short cut with hotkeys [ctr] + [alt] + [z].

Then configured my flic to send [ctr] + [alt] + [z] command.

Now finally I can toggle mute zoom call even when focus is on for example on a excel or browser.