User experience, often abbreviated as UX, refers to the total experience a user has with a tool, or even an entire company, across all methods of communication and interaction with that tool, including both direct interactions using a tool UI and indirect interactions via other tools such as email, SMS, phone calls, in-person human representatives of the tool or company, etc.
Why UX? A good UX should/will make you more productive, more in control (user agency), while minimizing frustration.
Then if/when you have a second user, watch *how* they use your software, and take notes. Watch where they get stuck, or frustrated. Listen to them verbalize *what* they want to get down, but be very ware of anything they say about *how* they want to do it, or any opinions about tools etc.
Beware of just "asking" users what they want. They're usually wrong (they don't have sufficient self-cognition plus design skills to do so, not their fault) and you'll usually get bad outcomes if you try to build accordingly.
See video: https://www.youtube.com/watch?v=Pw9gaEiQAxY