Mysql installation failed while building azure pipeline

Question

Hello Devs,
Project details : Django Python3.9 Linux app service backend, Mysql flexible server database, Deployment using Azure devops and pipelines

In the deployment phase while building with yaml file, I need to use Mysql server as backend, so to install that i used "sudo mysql-server" in the yaml-script, but its getting failed at that step,
After research i came to know that azure agent pool has mysql already installed, i need to just enable it in the script, I tried enabling but still my django is not able to find the mysql-backend,
I tried even both enabling and installing mysql-server, still the same error, my code is throwing no mysql backend found