What sources can a UX practitioner turn to in order to gain user data are these limited to online sources only?

A UX practitioner can gather user data from a variety of sources, both online and offline. Online sources include user surveys, web analytics, and social media feedback, while offline sources can consist of in-person interviews, focus groups, and usability testing sessions. Additionally, practitioners can leverage existing research reports, industry studies, and user feedback from customer support interactions. This diverse array of sources helps ensure a comprehensive understanding of user needs and behaviors.