Can family sharing see my personal text

Hello Kd7902,

Thanks for connecting with Apple Support Communities.

With Family Sharing, everyone's personal files and preferences stay private. Therefore, family members are not able to view each other's text messages.

"When you share iCloud+, family members can't see each others’ photos, files, or documents. And when you share other subscriptions like Apple Music, Apple Fitness+, or Apple TV+, each person sees their own preferences and recommendations — not the whole family’s."

Click here for more details: What is Family Sharing?

Have a wonderful day.