-bash command not found

[marco4568]

tried to update youtube-dl to the latest version. I was able to do that with "brew install youtube-dl" but afterwards everything becomes something like this:
https://i.imgur.com/2EzPj9b.png

I searched it up and it probably has something to do with $PATH? I'm pretty desperate right now. Please help me with this, thanks so much

here's the command line:

Last login: Thu Apr 25 11:21:31 on ttys000
Ohayons-MacBook-Pro:~ marco4568$ brew install youtube-dl
Updating Homebrew...
==> Auto-updated Homebrew!
Updated 1 tap (homebrew/core).
==> Updated Formulae
blast chakra frugal kitchen-sync maxwell pspg

==> Downloading https://github.com/ytdl-org/youtube-dl/releases/download/2019.04.24/youtube-dl-2019.04.2
Already downloaded: /Users/marco4568/Library/Caches/Homebrew/downloads/e604a5135dcd87079fa936688c5b61af6b9c108746caafacd192e22c951c3d7f--youtube-dl-2019.04.24.tar.gz
Error: The brew link step did not complete successfully
The formula built, but is not symlinked into /usr/local
Could not symlink etc/bash_completion.d/youtube-dl.bash-completion
Target /usr/local/etc/bash_completion.d/youtube-dl.bash-completion
already exists. You may want to remove it:
rm '/usr/local/etc/bash_completion.d/youtube-dl.bash-completion'

To force the link and overwrite all conflicting files:
brew link --overwrite youtube-dl

To list all files that would be deleted:
brew link --overwrite --dry-run youtube-dl

Possible conflicting files are:
/usr/local/etc/bash_completion.d/youtube-dl.bash-completion
/usr/local/share/man/man1/youtube-dl.1
==> Caveats
Bash completion has been installed to:
/usr/local/etc/bash_completion.d

zsh completions have been installed to:
/usr/local/share/zsh/site-functions
==> Summary
🍺 /usr/local/Cellar/youtube-dl/2019.04.24: 12 files, 2.1MB, built in 5 seconds
Ohayons-MacBook-Pro:~ marco4568$