How to Optimize my new website?

A good place to start is with a decent SEO plugin. I recommend this one: https://www.ads-software.com/plugins/wordpress-seo/

Then I would suggest reading up a bit about SEO in general so you’ll better understand all the features a plugin like that offers. This is a good place to start: https://moz.com/learn/seo

Hahaha .. I’m using Yoast ?? … I know some kind of methods also. but don’t have powerful tools.. thanks for the reply !!!

There are all kinds of SEO strategies out there, but really the most important thing you can do is provide decent, relevant content.