"do you think one can do such a silly mistake"

Yes. There is a really silly, simple mistake in your code that is preventing it from doing anything remotely resembling what you expect it to do.

There is also a fundamental design flaw which, even if you manage to spot the really silly mistake, will prevent it from doing what you actually want it to do.

However, as you are clearly too clever to make silly mistakes I'll conclude that your ego is too fragile to have these mistakes explained to you.