unlock network of my Google pixel

[Bogims]

please i have difficulty using my google pixel when i put another sim card apart from verizon sim card the phone sends me please contact verizon and i paid all the money for my google pixel tell me how I can use another SIM card than verizon currently I am in Africa there is no verizon I would like to always use my phone when I put orange or MTN a message appears in the notification bar asking me to contact verizon

[vzw_customer_support]

Hello, thank you for reaching out to us. Where did your purchase your Google Pixel device? 

~Ivone

[Bogims]

here is the date of the day I bought my Google pixel 2020-12-22 in the United States Model Name: Pixel 4a (5G) (128GB

[vzw_customer_support]

Thank you for the information, Bogims. To better assist, we'll be sending a Private Note.

~Izzy