Getting better feedback out of users is a conscious process. It doesn’t require huge amounts of effort to put processes in place to elicit better feedback.
https://www.interaction-design.org/literature/article/how-to-get-more-honest-feedback-in-user-testing/
Most managers understand the importance of collecting feedback on their performance and the organization in general from employees. In fact, a Gallup study of 469 business units found that managers who received feedback on their strengths showed 8.9% greater profitability post-intervention.
The trick, however, is to ensure you're getting honest feedback. Sometimes employees are afraid to criticize their manager or the company for fear of repercussions. Changing this perception – or better yet, preventing it from forming in the first place – requires building a culture of trust and transparency where all types of constructive feedback are encouraged, no matter the source...
https://www.forbes.com/sites/forbescoachescouncil/2017/10/17/want-honest-feedback-from-employees-16-strategies-to-try/#5f7c562629ac/