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Buy a Windows tablet. You can find them for less than $100. I've seen some for less than $50. Just search on ebay. Beware of exaggerated claims, however. And FYI, Windows 11 can run Android apps so you'll have the best of both worlds -- and a massive selection of software that smashes MacOS/iOS. Add a keyboard and you'll have a laptop.

While APK expansion files are limited to 2gb each, you have the option of using 2 expansion files. Can't you do that, or is it too unwieldly?

APK Expansion Files  |  Android Developers

That's not how it works. It doesn't matter how much storage space you have because Android limits the size of their APK expansion files to 2gb.  You can have up to 2 expansion files but their programmers decided against it. You can read about it below.

APK Expansion Files  |  Android Developers