Maybee an excellent practice (ex hospital) physio assured me that x-rays are not always an accurate indicator of pain and dysfunction levels but merely part of an assessment process. Please stress, with support from your daughter, how disabling your knee and other issues are.
Our area does not label joint issues from 1-4 but rather mild, medium and severe, far less clear in my view. My knee was labelled medium from x-rays, it was however very misshapen and my leg noticeably bowed. When MSK referred me for surgery the consultant surgeon was horrified and asked why I’d not seen him two years before. My response? The system!
There’s a clear referral route at our practice. GP to practice physio, exercises and consideration of steroid injection as first level. Then referral to hospital physio where an escape pain hospital gym course can be offered as an option. After completion or on refusal (it is genuinely optional) the hospital physio, practice physio or a GP then refers to MSK where a decision is taken on appropriateness of onward referral to a surgeon. Yes, it all takes time, a lot of time, but at least a clear path is followed.
Good luck maybee. You seem to have fallen through some primary care cracks, I hope you can receive the help you deserve.