I can not download videos from YouTube

• Browser: Chrome 84.0.4147 Windows
• User Agent: Mozilla/5.0 (Windows NT 6.3; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/84.0.4147.105 Safari/537.36

I can not download videos from YouTube (from last week), what happens??

Here are some example links:

https://www.youtube.com/watch?v=-JD81Z4HD5Y

https://www.youtube.com/watch?v=ekehNbqaDwI

https://www.youtube.com/watch?v=uGbbTA3hKdg

https://www.youtube.com/watch?v=mwbY3op2J-s

https://www.youtube.com/watch?v=QZYHRY2DR-w