The NHS will never be "sorted". It's institutionally incompetent and inefficient. Until you spend any length of time dealing with long term/multiple health conditions, you don't realise just how bad it is in terms of illogical procedures, incompetent admin/management, staff who literally don't know their arse from their elbow, no respect for patients, no proper infection control awareness, etc.
People who are on the fringes, i.e. the odd visit to A&E or the GP, know that it's not ideal, but they think it's just one-off problems, or occasional, etc., But when you literally have to talk to doctors, nurses and support staff every week, have multiple hospital admissions, multiple tests and treatments, over a number of years, you realise that the incompetence and inefficiency goes right through its veins.
Not getting a GP appointment for a couple of weeks or a 6 hour wait in A&E or a 2 hour wait in outpatients is just scratching the surface. If that was the NHS only problems, it's not really a problem as that's superficial.
The real problems are that there's no communication between departments/staff. Different departments don't know what others are doing, they don't know when procedures change in a different department. Everyone knows that hospitals and GPs don't talk to each other because they're different trusts. What they don't know is that different departments in the same hospital/same trust don't have effective communication either. Even when they're literally next to each other physically or just across the corridor, they don't/can't communicate, leaving the patient to run around like a headless chicken chasing different departments for things that one department has told them will happen but the other department says won't. Patients are left in limbo. Not helped by the fact that so many staff/depts simply don't answer their phones anymore, deliberately, leaving them ringing constantly, meaning patients simply can't find the right person to deal with their issues, and of course, they refuse to give out email addresses either, so patients often have to turn up in person at the ward/department to get things sorted/answers/appointments, etc.
Until you've seen it in "action", (or lack of action) it's hard to appreciate just how bad it's become.