Explanation:

- Original Sentence: Why doesn't you try calling your family again?

- Analysis of Original Sentence: The subject-verb agreement is incorrect here. "You" should be accompanied by "do not" (or "don’t") instead of "doesn't".

- Option 1: You don’t tries: This option incorrectly uses "tries" after "do not", as it needs the base form "try". Incorrect.

- Option 2: Doesn't you tried: This option misuses "doesn't" with "you", and "tried" should be "try". Incorrect.

- Option 3: Don't you try: This option correctly pairs "don’t" with "you”, and uses the base verb "try".

- Option 4: No improvement required: The original sentence needs correction. Incorrect.

Correct Answer is Option 3: Don't you try