Question: When did you start using social media?
Analysis

1.Provide a specific time or age when you began using social media. 2.You can also mention the reasons or circumstances that led you to start using social media, such as staying connected with friends, for entertainment, etc.

Synonyms
Try these synonyms instead of repeating the question:
  1. start→begin; commence
  2. using→engaging with; utilizing
  3. social media→online platforms; social networks