Looking on the internet deeply has found these results:

What am you doing? is the most popular phrase on the web.

What are I doing? 1405,000 results on the web	What am you doing? 1696,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
I'm suffocating here. Kevin, what are you doing? What are you doing? I'm sorry. What are you doing?	I mean, what good am I doing you? What am l doing with you? What am I doing asking you? What am l doing with you? What am I doing to you Christine? What am I doing with you? Liar! What am I doing with you?

What are I doing?

1405,000 results on the web

What am you doing?

1696,000 results on the web

More popular!