How to send direct sms to multiple numbers which is stored in firebase?

Hii,

I am working on a project that involves sending SMS messages to multiple phone numbers, which I have stored in Firebase.

While I have successfully set up Firebase to store the phone numbers, I am now facing a challenge when it comes to sending SMS messages to these numbers in an efficient and scalable manner.

I am looking for advice, recommendations, or even code samples that can help me to achieve this.

Thank you in advance for your support and expertise.