Problems with celecoxib told from doctor this is not helping me with my falling taken this for 30 months?

The use of celecoxib in neurologic disease (assuming that is why you fall) is highly speculative. A 30-month trial is longer enough to see if there is a positive effect. If you are falling due to hip or knee pain, a 2-month trial would have been long enough.

It all has to do with the reasons behind your falls, such as balance, weakness, pain, vision or hearing loss and so on. Physical therapy is in the majority of cases best, not sure about the intended role or benefits of celecoxib in your case.