which language should i have to learn after html, css, js, bootstrap, jquery, angular js, php and mysql

Since you went the web dev path, I suggest node.js as an alternative back-end language.

If you know all these languages. You are ready to develop stuff. But if you want to learn more. You can go for Java or C++ for Android. Or you can also chose c# or game development.

Raj Chhatrala how about XML?