Add notification icon on navigation bar in admin panel

Hi team, Important Proposals for a Saas . Project There should be a notification icon here every time there is a site fluctuation eg. New payment from user, new contact, withdrawal request, new support request, new user, new update…. https://prnt.sc/zU4vCkOskG1v and in the user dashboard there should also be messages like, Payment accepted, withdrawal request accepted… Thanks