How can I be a liar if I've been reading and trying to  memorize the Quran most of my life?

I stand by what I said, I can't find anything in the Quran that states "Islam needs to blanket the earth".

Again, show me where it says that in the Quran. Don't provide me with links or web pages discussing it, show me where it says it in the Quran itself.

Here I'll help you out:

https://quran.com

Show me where it says it within that web page.