I cannot completely understand your question.

I’ve read a book in English. I love it! I I want to read it in French as well.

J’ai lu un livre en anglais. Je l’adore ! Je veux aussi le lire en français.

There is a clear analogy between French and English here. Your question should have been less unclear. In any case for queries like this DeepL comes in handy.

First mistake is :

lire en française => lire en français

In your case, you have to say it with “le” cause “le” refers to the book you read.

Je veux le lire en français aussi.

If you say :

Je veux lire en français aussi.

It means that you want to read in French generally, not specificly this book.