Anur Claufer,
I must appreciate you for your curiosity for learning the techniques of fluent English. I hope, you would take every opportunity to use this language in your conversation within your friend circle but ensure that they are the ones from either the convent schools or from some public schools where the teachers have taken enough care for the improvement of their oral language apart from their writing skills.
If you express your honest desire for learning the language, they would gladly accept your proposal and whenever you come across with your known friends, they will certainly oblige you.
In the YouTube, you would find a lot of channels which can teach you the basics of English Speaking Skills. You need to listen to such videos to make yourself comfortable with this language.