Unfortunately, no. Metro is a PC game and not an Xbox game.
Yes, Metro is free on Xbox.
No, Lake is not coming to Xbox.
No, Metro saga bundle does not include all DLC.
Yes, Metro Redux is available on Gamepass.
No, Metro Redux is a standalone game.
No, Metro Exodus is not free on Xbox.
Metro Exodus is not currently free to play.
No, Metro Exodus is not enhanced free.
Yes, Lake is free on Xbox.
The game Lake is $19.99 on Xbox One.