Is it possible to survive old age without getting married in Pakistan?

I'm 26. I fell off motorcycle and been injured for years. Not sure if my injury is permanent or not because almost every doctor says that I'm fine. Even my MRI doesn't show any issue but I'm still injured even after years.

I can't do most things with right hand such as lift weights and do computer work with my right hand because elbow muscles were damaged.

I fell three years ago and the left side of my left knee was hurt. Took pain killer and I had no pain for 3 years. After 3 years the pain is back in the same area that was hurt and I have problem walking on stairs.

I'm planning on not getting married because of my health issues. But I'm worried about old age. I don't know how good the elder care system is in Pakistan. I've been trying my best to heal. But what if I never heal? Do you know anyone who has reached old age and has no kids? What's their life like? How's the elderly care system in Pakistan?

And if you read this far then please learn a lesson and avoid motorcycles as much as possible. I've seen multiple lives getting ruined because of motorcycle accidents. And if riding motorcycle is absolutely necessary then always wear helmet and safety gear. I wasn't wearing safety gear. I've had many problems in life but this one is by far the worst.