No, you shouldn’t.
If I had to single out one of these three, I would say:
be genuine.
You should be who you really are! Sooner or later, fakes get discredited by online users.
Some people naturally incline towards helping people in need, others love creating content that will stay behind them, and so on. The point is, we're very different types.
My key suggestion:
If you want to become an ambassador, stop trying.
Stop competing with others. The competition is too strong.
Instead, do what you're good at. Compete against your own weak self.
Build your personality. Learn as much as you can and grow your inner being.
This may sound odd. What your inner being has to do with your online business?
I dare say – a lot. You should strive to reach psychological harmony. Online users are clever. You can't trick them for too long.
If you continue to grow you'll learn the key skill that will determine, both your online entrepreneurial success and your WA ranking...