Why can't I upgrade my Android to Nougat (7.0.0), Marshmallow (6.0.0), or Lollipop (5.0.0)?

My device is Samsung galaxy tab 3v SM-T113NU.

Goal: 4.4.4 to 5.0.0 +
When I try to upgrade, it says "You already have the latest update", but I still have 4.4.4.

I'm Expecting 5.0.0 +, but it wont work.

Any tips for me to upgrade?

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