Google Developers video [0] describing exactly how you should speak to users to get feedback: usability tests. This is pretty standard in the UX community. Here's Steve Krug, author of the Amazon top-selling book on web design "Don't Make Me Think," showing how to do it similarly [1].

[0] https://www.youtube.com/watch?v=0YL0xoSmyZI [1] https://www.youtube.com/watch?v=VTW1yYUqBm8

Edit: added Steve Krug video.