Xbox memory unnecessarily full?

I have a 500 GB Xbox one S with 47.2 GB of internal storage space. But when I did the calculations, my games plus addons are only 300.8 GB on my console. Plus the small apps about 2 GB so then 198 GB of a total of 500 GB should still be available, but it is only 47 GB. Can someone tell me why? Whether there's just too much garbage internally because I want to download Modern Warfare. Is there a way to free up memory by deleting content such as my bike in Microsoft Edge or Youtube. I think there's too much garbage on it which is why 135 GB are missing. Can someone help me please?

As far as I know, 500 GB is never quite 500 GB, but something around 460 GB and then you have to charge some space for the operating system

Saved data so saves - if you delete the game the score remains.

Screenshots / recordings

Software or operating system of the Xbox consumes approx. 50 GB, which is always the case

Remember games with MIT addons are bigger than without them. Unfortunately, only the memory usage of the game is shown, if you open the "Manage Game & Addons", the actual, greater memory usage is displayed. Here are 2 photos as an example, with "Train Sim World":



Here you can see how big the main game is. However, the actual memory is displayed when you select "Manage games and add-ons" with the start button:

There it now shows 31.3GB of memory consumption. TSW is not the exception now, all games only show their actual memory consumption when "Manage Game & Add-On".

Fortunately, I have a One S with 2 TB internal storage, and a One X with 1TB internal and an external 2TB HDD. You should either buy an HDD, or maybe buy another one and use or sell your current one as a second console.