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Congratulations, Amrit, now I see a logical answer, it is clear now about clocks. It is true that some quantum clocks tick everywhere, even inside of black holes. However, inside of black holes the time dilation is infinite; therefore your natural clocks are frozen forever.
Amrit, now you have found the definition of physical time. Now you have found a proof that space and time really exists. The physical time is a oscillation of quanta of space. These natural clocks tick in every point of space, it is a proof that space and time really exists. I strongly recommend you to write a new essay/paper about physical time as tick of quantum clocks. Since we can influence the rate of time using matter (gravitation), it is another proof that space and time really exists. You cannot influence the mathematical abstraction only.
Sincerely, Leshan