Thank you for the clarification.
I am here to answer all your questions:
Is there any history of instability, especially while walking on an uneven surface or sudden change of direction?
If yes, then how many such episodes have occurred?
No, my walking has been good all time.
Is there any history of knee locking or clicking sounds while bending the knee?
Yes, I have clicking sounds when I bend my knee sometimes. It happens once every few days or weeks, maybe more.
Does the pain increase on squatting?
Does it pain when you are sitting cross-legged?
Yes, the pain increases when sitting on the floor cross-legged.
Does it pain more while climbing or going downstairs?
Sometimes there is minor pain when going downstairs.
Do you have knocked knees?
No, they are normal.