I recently gave an L6 interview with Google. Below are the details of the process.

First round: HR, introduction, and forwarding resume with teams.
Second round: Telephonic coding - related to Graph [Variety of Leetcode medium]
Third round: Telephonic coding - related to Huffman decoding. [Question not available in leetcode]

I cleared the above and moved to onsite.

Onsite :
System Design: Develop a real-time streaming system with scale -- Aced it
Coding: Variety of Leetcode Hard -- Did well
Coding: Question-related to trees. Hard Question. Not seen in Leetcode - Not performed well.
System Design: Develop massive scaling website -- Aced it
Googleyness: Did well

With one round gone completely bad, what are the odd changes I will make? Please reply, guys.