Hi,
Reboot /restart device.
Go to settings>Date & Time switch between time zones.
Select automatic time zone.
Switch between WIFI and mobile networks.
Go to settings >storage>cached data>clear cached data.
Go to settings>storage>apps>download manager>clear data.
Go to settings>storage>apps>settings>clear data.
Go to settings>security>scroll down to Device administrators tap on.
Android device manager>uncheck in the box ( deactivate temporarily).
Go to settings>storage>apps>google play store>uninstall updates.
Open google play store>menu>settings scroll down to build version tap on this.
It prompts to update google play store.
Go to settings>storage>apps>google play services>uninstall updates.
Open Google drive or inbox.
This prompts to update play services.
OR
Leave the device for sometime/ overnight,
Switched on and connected to a stable WIFI and fully charged battery.
Apps updates automatically.
After finished this.
Reboot /restart device.