I wan't to check if variable on a scritp component is missing

As shown on pictures I wan't to destroy an object if it has a missing transform variable on script.

currentLeadTransform is a transform variable. I wan't to destroy gameObject if it is missing(not null). if (gameObject.GetComponent().currentLeadTransform == null) Destroy(gameObject);

I have tried code above but it didn't work. Thanks to everyone who want to help. Much love.

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