Tax Return

Hi! I'm living in Ukraine and I will be traveling to Germany very soon. I wanted to buy AirPods online and pick them up in the Apple store in Frankfurt. As I'm not the resident, I would like to make a tax refund at the airport, is it possible?

As far as I know from my previous experience, when you need to make a tax refund, you're asking for it at the store and they give you the special form to fill out and then they attach the receipt which you take to the airport customs.

In this case, when I buy online, is it possible for me to make a tax refund?

Thanks!