Historically and technically, you are a victim of the same propaganda and disinformation, which most people fall prey to.
We did lose East Pakistan, yes, and that too thanks to the overwhelming odds involved in the conflict itself, in an area completely surrounded by the hostiles with no possibility of support or supplies.
But I would like to learn and understand how exactly did we lose the war waged on us in 1965 (ofcourse due to our misadventures across line of control, but still we were not the ones opening the border)
And how exactly did we lose Kargil? Given we not only took the peaks but also bled their forces and gave them a hammering, and helped them understand how vulnerable they are.
Except Mr. Nawaz effing up the end game....