cant download from youtube with -best -bestaudio

[ujebehege]

Checklist

• I'm reporting a broken site support issue
• I've verified that I'm running youtube-dl version 2020.05.29
• I've checked that all provided URLs are alive and playable in a browser
• I've checked that all URLs and arguments with special characters are properly quoted or escaped
• I've searched the bugtracker for similar bug reports including closed ones
• I've read bugs section in FAQ

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cant download from youtube with -best -bestaudio like this code
youtube-dl -best https://www.youtube.com/watch?v=gxud7UL8McM
or C:\Users\12345>youtube-dl.exe -bestaudio https://www.youtube.com/watch?v=gxud 7UL8McM
works only C:\Users\12345>youtube-dl https://www.youtube.com/watch?v=gxud7UL8McM
and it just donwload the video, but i want the best audio forman from the video , like i donwload it before

[dstftw]

There is no such option -bestaudio.