There are several options that you can try if the apps are having problems on your Poco M3. It does not seem to be a problem with the device, but some conflict that the app may represent or some oversight in the settings .
So you just need to check some details. Start by deleting the data of the applications that give you problems. To do this, go to the "Manage applications" section, choose the app, select "Storage" and click on "Delete data".
Take a look at the permissions it requests and verify that you have enabled those essential for its basic operation. On the other hand, go to the Google Play Store and make sure that the apps that cause you problems have the latest update.
And one last detail is to verify that the Energy Saver that you have configured does not prevent the apps in question from working correctly.
Of course, we can always resort to resetting the mobile and returning it to the factory to rule out any conflict in the mobile software. But don't get used to carrying out this process every time you have a problem with your mobile. First, find out what the possible causes are and try some possible solutions.
Sometimes the problems that a mobile phone presents are only related to a bad configuration or bad habits of users. And of course, big software updates often cause conflicts, but you won't find a definitive solution until they release a patch or a new update.