Using Youtube’s v3 https://developers.google.com/youtube/v3/docs/activities/list API, is there a way to access videoId?

I am concerned about where the fees come from when I use YouTube Data API.
We tried to find out by looking at the official website and other websites, but it was not clear.
URL: https://developers.google.com/youtube/v3/determine_quota_cost?hl=ja

I am fetching a video using official Youtube data API, and through that I am getting the response in the following format,

I am building an app that would authenticate users using YouTube Data API V3 and allow my app to post comments on YouTube videos on behalf of the authenticated user. I’ve tried to find out best practices but could not find anything on how many same comments can be posted across different videos and in what duration keeping in mind avoiding spamming situations from the YouTube platform. Any guidance or information on the same will be helpful.

Is it possible to pull impressions from the YouTube API? I searched this documentation (https://developers.google.com/youtube/v3/docs/videos), but couldn’t find it anywhere. I’m hoping to pull the impressions from the analytics content tab in YouTube Studio.

I am trying to use the endpoint /youtube/v3/members from YoutubeDataAPI, but even after the successful channel authorization with OAuth2, i keep getting the error