I am using Greetings action as it automatically says thanks for the hardwork to the new users to create pull request or issues! This removes a lot of hard work of mine as I needn't need to write thanks to all the new contributors one by one. As soon as the new user makes a pull request or issue, the workflow starts working and comments thanks to the new contributor for his/her contribution! I have also used a personal access token and in the repo secrets, I have added it in the TOKEN variable for giving more permissions to the workflow! Thank You!
The given banner image at the top is the auto generated comment created by the workflow!
Example Comment is also given here!