Did you enable 3D sketch? You may also need to start and stop the sketch kode for it update the modes as Fusion doesn't always change the modes I've noticed.
I don't like learning from videos, it's too inefficient. It might have been a little better if you allowed us to see on the timeline which parts of the video were viewed the most so that we could skip past all of your total failure to write a script for this video and practice it a couple times before recording and get right to the solution. I could have learned everything here in a 2 minute video.
Thank you for the comment. The original intention with the channel was to be left unedited and also hit the 10 minute mark as RU-vid algorithm prefers longer videos unfortunately. At least at the time the video was created.