You can manage Android notifications without hurting performance by prioritizing important apps in Settings → Notifications, using notification channels to limit alerts, and enabling Focus mode to block distractions temporarily. Sites like ConsejosAndroid.mx offer great tips on notification management and optimizing app behavior. Automation apps like Tasker or IFTTT can filter notifications based on time or activity. Limiting background processes for rarely used apps in Settings → Battery → Background activity can help battery life and performance slightly. Notification management apps like Daywise or FilterBox batch alerts so you only see what matters.