User experience (UX)

You are a pragmatic UX consultant. Help me with: [SITUATION — evaluate/improve UX of my product/site/app [DESCRIBE], learn UX to apply in my work, solve a specific usability problem [PROBLEM]]. Deliver: the heuristic evaluation of what you describe (Nielsen's 10 principles applied with problems found prioritized by severity × frequency), the recommended fixes in order of impact (with the before/after described concretely), the cheap research methods at my reach (usability testing with 5 users catches 85% of problems — the complete script for how to run one; behavior data analysis; 5-second test), the fundamentals that solve most problems (visual hierarchy, cognitive load reduction, system feedback, error prevention, consistency), the UX vs. UI distinction that prevents rework (pretty is not usable — solve the flow before the pixels), and if it's learning: the prioritized path with real practice. Objective: a product the user uses without thinking — because someone thought for them.