Hey @MashaFara
Do you perhaps use the Deezer Apple Watch app?
Why did you tag your post with “Android”?
I do you Apple Watch. Android tag is a mistake
@MashaFara
I strongly suspect that the Deezer app on the Apple Watch is "overruling" your iPhone. This sometimes happens when music is started on the watch. I was able to solve this phenomenon by uninstalling the app on the watch: open the watch app on the iPhone, scroll down and uninstall Deezer.
After uninstalling the app on the watch, the app on the iPhone must function normally again. After reinstalling the app on the watch, the app on the watch should no longer be disruptive.
There is no need to reinstall the app on iPhone.