Change Notification Shade Shortcut
On many Xiaomi phones the icon in the top right corner of the notification shade always opens Settings, even if you never use it there. If you pull down notifications dozens of times a day mainly to search for something, that shortcut is wasted space and slows you down.
Manage Notifications for Individual Apps
If one chatty app keeps popping up over whatever you're doing, or a messaging app reveals message previews on the lock screen when you'd rather it didn't, the fix isn't a single master switch. On Xiaomi phones, every app has its own notification behavior for sound, pop-ups, banners, and lock screen visibility. Without adjusting the right app individually, the annoying alerts keep coming back.
Change Alarm Volume
If the alarm on your Xiaomi phone barely wakes you up or does not go off loud enough, the alarm volume is set too low system-wide. This one setting controls every alarm you create, and it stays the same even after the snooze function kicks in.