Installed COD...I think??

So, maybe I'm nuts or something... but like I'm not sure what's going on. I haven't played COD in years and was told Call of Duty: Modern Warfare, the 2019 one is actually kind of good so I figured I'd give it a shot.

So here's what's going on.

I installed Call of Duty: Modern Warfare 2019 all 75GB of it.

Then I atart the "Game" and hit start, it connects to xbox live, then tells me I have to purchase Call of Duty Modern Warfare on the ride side, so cant do that. Then on the left side I click play now, which says it's putting me in warzone 2.0?? Which then redirects me to install either BO6, MW2, MW3, campaign/multiplayer/co-op/warzone.

So like, everything, except for the 75GB game I allegedly installed. So... am I stupid? Did I literally install a 75GB menu... and nothing else? I can't be bothered to delete literally all my games just to play some of these COD games. I'm not doing something wrong here am I?