05-12-2022 10:00 PM
05-13-2022 03:07 PM
Depending on the device you are using it may determine it can't send as RCS and converts it to SMS. This is an option that you may have enabled:
How to Set Google Messages to Use SMS When RCS Fails (makeuseof.com)
05-13-2022 05:00 PM
RCS requires it to be enabled for both sender and recipient. If the recipient doesn't have it enabled then the message is sent via SMS.