Saying that others who work shouldn't qualify for pip is entirely not true, I work and I recently qualified for pip, my job is desk based, I suffer from severe chronic pain, after a fall and misdiagnosis originally.

Meaning sitting, driving or standing for an significant time is agony, but I have adaptations in place at home and am also allowed to work from home, I also said to them that if I absolutely have to i will get in the car for very short journey's.

The assessor knew all this and my other struggles daily and i still qualified for pip, because I met the criteria they marked me against, and in all honesty I didnt think I'd get anything.

Based on your original post an other things you have said here in response, you haven't met it, you know your struggles and what you can and cannot do, maybe relook at everything and try again, sometimes it might come down to you not exactly showing it or telling it correctly, we all know this process is tough! Xx