While there isn't any such option to set YouTube classic as default, you can always share your thoughts about Creator Studio by sending us feedback with these steps: https://yt.be/help/VdnK . The details you share would help us make improvements. Thanks.
@TeamYouTube Is there a way for me to disable YouTube from forcing me to go the the YouTube Studio Beta? It puts me on that version every time I want to go to the creator studio & I really don't like it
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Thanks. Twitter will use this to make your timeline better. UndoUndo
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