Can't Think, Talk & Concentrate

I am facing issues concentrating on one thing. The moment I try to get my focus on one thing my head gets heavy and I feel I cannot concentrate. Moreover sometimes my attention goes to other things while I try to concentrate on a thing. When I try to focus on a thing it feels that at that particular moment I can't talk to other people if someone asks me something at that moment as I feel my head got heavy. Moreover some songs or music keep playing inside my head which I feel is the reason my head gets heavy. Whenever my head gets heavy my thinking ability is reduced and I am unable to think properly. Plz suugest me whatever you feel is going to cure me. All your suggestions are essential. Thank You.🙏🙏