Upload a video to a branded channel with the YouTube API [closed]

I'm trying to upload a video to a branded channel with YouTube API through Python.

1. At first, I had a personal account linked to the brand channel.

2. When the API was executed, it was uploaded to a personal account, so I deleted the personal channel.

3. Is there a way to upload a video using API on a brand channel?

I've been looking for OAuth 2.0 articles for days and running them, but I can't.the presentI'm also working on a refresh token-related method, but it's not going well, please help.

I've been looking for OAuth 2.0 articles for days and running them, but I can't.the presentI'm also working on a refresh token-related method, but it's not going well, please help.