If you are using TikTok on your smartphone; you can change your TikTok account from private to public by simply opening the app and logging into your TikTok app
Step 1: Open up your TikTok Profile; to do this just tap profile picture at the bottom right.
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Step 2: Tap the 3-line icon/hamburger menu(☰) at the top right then open Settings and Privacy.
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Step 3: Tap Privacy and turn off the Private Account option...