Possibly
Possibly not
Probably not
They inherit the earth/land, but they aren't bound to stay there, they just get to dwell there.
Yes, the ones that came against the saints was "numbered as the sand of the sea" (and I agree it means "many"), but those were destroyed by the fire that came down from heaven, not by the lake of fire. You can see the different outcomes between the ones that were gathered together and the devil:
[Rev 20:8 KJV] And shall go out to deceive the nations which are in the four quarters of the earth, Gog and Magog, to gather them together to battle: the number of whom [is] as the sand of the sea.
[Rev 20:9 KJV] And they went up on the breadth of the earth, and compassed the camp of the saints about, and the beloved city: and fire came down from God out of heaven, and devoured them.
[Rev 20:10 KJV] And the devil that deceived them was cast into the lake of fire and brimstone, where the beast and the false prophet [are], and shall be tormented day and night for ever and ever.
Then please don't claim that your interpretations/understandings are "facts of the bible", as you did here:
Your post had some interesting things to discuss, but when you make the claim that your entire post is "facts taught in Gods [sic] written word", you are claiming biblical authority for your post, which you aren't authorized to claim.