User role issue for the Alerting plugin


I am trying to test the alerting plugin with Elastic ES & Kibana. I have 7.10.2 version of ES & Kibana and have installed the below relevant plugins for alerting -

I get the below error message when trying to create alerts -
[security_exception] action [indices:data/read/search] is unauthorized for user [_system]

I am logged in by the superuser, does it take the logged in user or some other user ? do I need to create a new user ? what roles does it need ?

I want to avoid installing the security plugin, I was not able to start the server with that plugin

Hello Team, hoping to get some directions on the above issue. Please help.