Why is Flutter only running as Superuser?
Flutter maintains several files in it's installation directory like Dart snapshot files, this is why /Applications, which has by default write permissions only for the root user, is not a good place to install Flutter to.
/Users/yourUser/flutter would work fine without root privileges.
I tried changing the location of flutter as answered by Günter Zöchbauer. But, flutter still needed superuser privileges. So, I gave them directly like this
sudo chown -R $USER /Users/yourUser/flutter/This worked fine for me. Basically, giving permissions to the user for the specific folder.