Google Play Store uses mobile network, ignoring Data Saver settings?
Google Play Store and Google Play Services self update is known to update when they &quot;want&quot; no matter if you are on WiFi or mobile and what settings you have configured.
I am not sure if the respect data saver settings but as Google Play Store is a system app permissions and settings do not apply to it.
And you have agreed to those updates when setting up your device. The following screenshot is from the setup-wizard that shows up on a new device/after a factory reset (see section marked in yellow).