Unable to run CICD pipeline using Azure Devops

I have setup my windows machine as agent in the default agent pool in the Azure Devops Server but when I am trying to build a pipeline its is not running. Just the pipeline code is being saved in the repo. This error is showing:

Now the permissions I have been set is:

Can anyone help me?

Based on the error/warning messages, you are a Reader role in the Default pool. This role is inherited from project-level or higher.

• The Reader role can only view the agent pools, and cannot use agents in the pools.
• To use agents in a pool, you should have at least User role assigned in that pool.
• To administer and manage a pool, you should have Administrator role assigned in that pool. Only Administrator can assign roles to users and groups. Note: An Administrator user can not assign roles to self identity.

For more details, you can see "Security of agent pools".

For your case, you need to contact the user who is an Administrator role in the Default pool or at the project-level, ask the Administrator user to assign the User or Administrator role to you.

From the screenshots you posted, I noticed that the groups Project Administrators, Build Administrators and Release Administrators have been assigned Administrator role. You can contact the user who is a member in any of these groups to assign the required roles to you in the agent pools.