The number one YouTube downloading software that VTECHZ recommends for Windows is YouTube-DLG.
Download for Windows: https://mrs0m30n3.github.io/youtube-dl-gui/
Once the software is done downloading and installing, continue to step 1.
Click on the gear, then press Update. The bottom of the application will tell you when it is done downloading.
Multiple videos can be downloaded at once if you add it to another line.
Select .mp3 for Audio Only, Select .mp4 for Video and Audio. The option of mp4 360p, 480p, 1080p may or may not work. Select mp4 for it to download the highest quality available by default.
If you have multiple videos to in the URL queue, all videos will be downloaded with the same format selected here.
Once the videos are queued, press the download button. (Cloud with arrow button)
Once all videos have been downloaded, you will see a pop-up window. Make sure that the status says: Finished. If it doesn't it could have failed or had an error. If it had an error, then most likely it should still be available in your downloads. If you continuously receive errors, update YouTube-DLG again. The software is only as good as the programmer updating the base program.