Google Software Engineer interview questions

I had 2 coding rounds followed by a virtual onsite day of 4 interviews. The first 2 coding rounds went fairly well with the first one being a fluke as I provided a correct solution which the interviewer failed to question me on correctly. This was amended and I was asked to complete another coding interview which I did and passed. The on-site interview was divided into 2 technicals, 1 system design and 1 behavioral. the behavioral was easy and went great, the technicals also went well but I struggled a bit throughout. The system design interview could have been conducted better.