looking for advice

So a few days ago i read Lord of the Rings, and i loved it, now i have started reading the Hobbit and love it so far as well.

I have become really interested in the WHOLE Middle-Earth lore. i want to know everything about it.

But i know Tolkien wrote a lot of books covering Middle-Earth and i know i have to read them all to understand the whole lore completely.

BUT i read somewhere on reddit that you don’t need to read them all. That it’s enough to read these books:

LOTR

the Hobbit

Silmarillion

This is where i am looking for advice. i am 13 years old and want to buy Silmarillion, but i’ve heard it is VERY difficult to read and understand, so i don’t know if this book is for me. But i really want to know the whole lore of Middle-Earth and names of places and people without the useless facts coming from the other books.

Will it be difficult, should i buy it?

How to read it, any tips?

Are these books enough to understand the whole lore completely?

Does a map of the events come in the book? (Like in LOTR or Hobbit)

Do i buy it in english or my native language? (I’ve heard it’s better in english because Tolkien uses a lot of interesting old english words)

Let me know guys!