AISpeak

There are many books in the public domain that you can read/download for free. For example, Primary English Grammar by John Hart. You may find three timeless classics here:

https://aispeak.space/free_books_to_learn_english

Their quality may not meet modern standards but they are readable :) Project Gutenberg is something you might want to see as well.

Free books to learn English Discover timeless English language classics on English grammar and speaking, freely available in the public domain

Why should you learn from a native teacher? A native teacher can clarify complex English phonics rules with clear and accurate phonetic pronunciation, helping you learn to read, write, and speak with correctness and effectiveness.

Why study English with a native speaker? This blog describes why is it better to learn English from a native English speaker?

Alone at home? You can still practice English speaking.
https://aispeak.space/how-can-one-practice-speaking-English-alone-at-home

How can one practice speaking English alone at home How can one practice speaking English alone at home or without a partner? It is undeniable that English is a global language. Whether for academic, professional, or personal reasons, being able to communicate fluently in English opens up a myriad of opportunities. In this blog, we highlight some str...