Please tell us some basic information before asking for help:
Model Name: Asus ROG 5S
Firmware Version: ROG Phone 5/5s _WW/EU/RU_31.0810.1226.139 (Android 12)
Rooted or not: not
Just receive security patches update notification, after install found some of the contact in SIM Card missing left 20 (suppose more than 50+).