Thank you for using Apple Support Communities. It's my understanding you're not seeing the appropriate options when trying to customize the Control Center on your iPhone. You've come to the right place! I'm happy to help.
If the issue persists, reinstall iOS with iTunes. This step can resolve possible software issues. When reinstalling iOS, iTunes will completely remove your current software and install a fresh version. While iTunes will try to do this without removing data, it's a good idea to make sure you have a recent backup before trying this step. How to back up your iPhone, iPad, and iPod touch
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Why is my control center customizing button not there
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