tab group style

Hello, where does one find the option to return old tab folder look? These bubbles look ridiculous and remind me of the 'corporate art'. As a long time user, my heart just cannot accept this. I was on the verge of crying when I saw this on my PC (I have been actively avoiding this update after seeing it on my laptop). I have looked everywhere in the settings but did not succeed on my own. Would greatly appreciate the help before I double my OCD medication norm