Serp features or schema

Hey, i was just analyzing my competitors website and seen that their meta description is inherited from table and after some more analysis found almost all post meta are inherented from table.I tried to check the schema of the website but i didn't found any lead.Please help how can do that too.

![IMAGE FOR CONTEXT] https://pasteboard.co/K6dLCST.jpg https://pasteboard.co/K6dM3to.jpg

ps:i m a beginner