Thank you for your reply and links :)
I saw this: https://support.google.com/googleplay/android-developer/answer/9859372?hl=en&utm...
It says Play Store hosts 1.5 Gb of resources? Or am I understanding it wrong?
Yes, you can use that https://android-developers.googleblog.com/2020/06/introducing-google-play-asset-... They have a Unity plugin. I don't know if it still works (Amazon's plugin for Unity doesn't work).
But then you're limited to Google Play and wouldn't be able to publish your game anywhere else. With addressables, you can publish your game anywhere.