Non insulated TRIAC control circuit

OP's circuit:

If some one can explain technically what and why it will go wrong in the mentioned type of triggering circuit it will be much more helpful

You appear to have zero understanding of what you’ve built. Discussing the triggering circuit is pointless and irresponsible as that is an incredibly dangerous circuit. What can go wrong is that you or anyone else that comes into contact with what would normally be a safe to touch 5 volt mcu circuit is now a lethal shock hazard.

You do not understand the implications of what you’ve built. It is not a question of if that circuit will blow up, only when. If you persist, it will only be a matter of luck that you don’t end up killing yourself.

This is not a laughing matter and I will not post in the thread again.