@komals_14 Radhe Radhe !
You will find different simplified versions of texts of the original books, I had personally brought them in hardcover, so unfortunately I cannot guide you the authentic sites to find them. However I'd like to mention that the core elements and meanings of the texts remain the same everywhere, you can confirm your facts through reading various websites, and you can visit Google scholar also, for real authentic articles related to different topics if you need.
That's all I can help you with.
Thank you! Have a great day. ♥️