How should I test my mobile app's user interaction qualitatively? [closed]

1. What is qualitative user testing?
2. What is the best testing method to see how users interact with an existing product in real world situations?
3. How do you test the user of an app?

What is qualitative user testing?

Qualitative user testing enables you to understand the reason why someone does something in a product and research your target audience's pain points, opinions, and mental models. Qualitative usability testing usually employs the Think out loud method during the testing sessions.

What is the best testing method to see how users interact with an existing product in real world situations?

Lab usability testing works best when you need to have in-depth information on how real users interact with your product and what issues they face. It will help you investigate the reasoning behind user behavior.

How do you test the user of an app?

App Usability Testing Tips and Best Practices

Don't make assumptions; provide your participants with SPECIFIC instructions. Ask mobile users what type of experience, features, and functionality they expect. Don't make tasks too complicated (not all participants are tech-savvy)