I'm not sure how to reinstall the personal focus on my iPhone 12 Pro

Hello jenniece177,

It sounds like you deleted a custom focus, and you'd like to set it up again. Here's how:

Turn on Focus

1. Go to Settings > Focus. 

2. Tap a provided Focus option—like Do Not Disturb, Personal, Sleep, or Work—then tap Customize Focus.

3. Set up your Focus. You can select allowed or silenced notifications from people and apps, connect your Lock Screen or Home Screen, have this Focus turn on automatically, and add Focus filters.

You can find additional information about using Focus here: Use Focus on your iPhone or iPad - Apple Support

Take care.

Hi jenniece177,

You’re welcome! Please reach out again if you need further help.

Cheers!