Idle Champions of the Forgotten Realms has an Android version. It’s F2P, though with many ways to buy stuff, but you can totally enjoy that game without spending a penny. Did so for years, though I eventually spent a few bucks as a thank you, given I have about 8000 hours logged on the steam version.
Also Watcher of Realms is a standout of the Gatcha like hero battlers which I much prefer to the likes of RAID.
Unsure of how much you need a Google acount though as I use mine for Android stuff anyways.
I use backblaze too, started with the personal back up, but swapped to the B2 solution as it was supported by my NAS. The cost of the actual storage isn’t much, most of the cost is in access, so for data that doesn’t alter much it worked out just as cheap, and easier to do things that way.