Hello,
At the very first, you need to thoroughly go through the NCERT books to clear your fundamentals. They are the best books to begin with. After that, you can go for higher level books.
Relying on a single book for the preparation of JEE mains is not recommended. Cengage books are very good for JEE preparation. But each topic in JEE mains is well explained in different books. For example, Inorganic Chemistry by JD Lee is the best book for Inorganic Chemistry.
Here's a list of books recommended by experts to prepare for JEE mains. https://www.google.com/amp/s/engineering.careers360.com/articles/best-books-for-jee-main/amp
You can also go for the JEE mains online coaching by Careers 360 which provides previous year question papers, mock tests and many more. And the price is really low. But the facilities you get are the best.
https://www.google.com/url?sa=t&source=web&rct=j&url=https://learn.careers360.com/&ved=2ahUKEwjxlvaf-p7qAhXOR30KHYxKClAQFjABegQIBxAB&usg=AOvVaw1ygKzacnBaQOPGaLiWbSgF

Hope it helps

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