You probably can de-google your current tablet (Replace google's apps with 3rd party, But please don't get rid of google play, as that controls notifications and is a pain to get reinstalled sometimes)
Otherwise, the only thing I can really think of is And I Sadly must say an IPad Mini.
One Villain for another...
I do run Linux on a Windows-Based tablet, And that is a bit complicated.
So-- my ultimate Suggestion,
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