If you have already unlocked your phone, do a Mi flash with fastboot rom. Now, the latest stable V12.0.13.0.QJJCNXM rom (not xiaomi.eu) is available. Everything in your phone will be wiped clean but any software issue will be solved. If you still have the issue, it is a hardware problem.
20.7.23 on Mi Note 10. Emergency Alerts. Can't switch off Amber Alert notification alone. After switching off, it switches on automatically. To switch it off I've to switch off all the Emergency alerts notifications.