How to remove/uninstall gitlab-runner completely from centos

My gitlab-runner service is not running no matter what I do. I used to have same problem before and when I used to update it used to start running but now it’s not starting at all. I have uninstalled and then again installed it’s still the same. I guess I am not uninstalling completely. Kindly let me know how to uninstall gitlab runner completely or how to start service. I also don’t get home dir of gitlab-runner.

Thanks in advance