Yesterday I searched my domain name on google like "Techymoon"
Google started showing all tags, authors, pages, and this blog also where I mentioned my domain name.
Is there any way to get rid with it?
You can go to Yoast SEO > Titles & Metas and configure the way your website looks bro.
If you want to disable pages like tags, authors, and others on Google search results, you can check the other tabs for “Post Types,” “Taxonomies,” etc. You’ll find the options here to enable/disable them.