@Jas Bamrah Thank you for reaching out.
While you can use the Run Pipeline REST API to trigger an Azure Pipeline, another alternative would be to use an extension like Trigger Azure DevOps Pipeline from the Visual Studio marketplace. This extension can be used for triggering an Azure DevOps Build or Release Pipeline.
Here is a related blog post that walks one through the extension configuration: Trigger a Pipeline from an Azure DevOps Pipeline
Please check if this helps you with your requirement. If not, please post your question in the following forum where the Azure DevOps team and DevOps community are actively answering questions: https://developercommunity.visualstudio.com/spaces/21/index.html