Triggering pipeline

I set up my pipeline correctly in a project where I and my friend are working together (I have the owner role and he is the maintainer).
When I push into the repo the pipeline triggers correctly and does everything.
When my friend pushes into the repo the pipeline doesn’t even trigger itself, can somebody explain it to me?
Here is a screen of our pipeline, mine is ok, and his is not.

I look in the Settings for some tick-to or options but can’t find anything useful

Thank you, everybody

Added a credit card to verify the account