When you are finished with your movie, upload it to YouTube directly, either using your UW account or a personal Google account.
To make screen recording with Windows, download and install OBS Studio.
Once it's installed and open, click the + button under the "Sources" tab:
Select the "Display Capture" source:
In the popup that appears, accept the default options and click OK:
In the confirmation menu, again click OK:
To start a recording, click the "Start Recording" button:
And when you're done, click the same button again.
Finally, to view your finished recordings, click File > Show Recordings and it will open them in File Explorer:
If you can't figure out how to use OBS, QuickTime, or iMovie, you can always use your phone or other video recording device (i.e. GoPro) to record. However, if you use your phone, the movie must be something that we can clearly view. For example: