Games wont open from Microsoft Store or Xbox app

At first please check out that tipps:

Troubleshoot game issues on Xbox | Xbox Support

If that doesn´t work don´t hesitate to ask again here.

Hi,

Yes I have grounded downloaded and that works fine rn.

Some games I can manage to get to download by going to them via XBOX website for example Astroneer and Valheim. Like if I go to the XBOX app and search for those games they wont show up, but if I start the download from the website so it opens the xbox app from there I can download the game.

But that trick doesnt work with all the games. Like sea of thieves and no mans sky it will just greet me with the option ''not available'' after I open the xbox app from the store.

I feel like this is a problem with microsoft store app, not the xbox store app itself (because tried to delete and reinstall that). Im not sure but I assume XBOX app gets the games via microsoft store no? Because I cant see any of the games in microsoft store app either and I assume xbox app is linked to that somehow (would also kinda explain why I can get the downloads work from the website).

Another problem I noticed from my friends screenshot of his microsoft store front page is that when I open my microsoft store app and on the left side is the window is the bar with icons (like home, games/gaming etc), for me its only showing the home icon, not the games icon or any of those.

All of my Microsoft and Xbox games are downloaded on my external drive including the previous Horizon, which is Forza Horizon 4. I changed where new apps are stored when downloaded from the Microsoft store to my external drive but it still wont download Forza Horizon 5 to my external drive. On the Xbox app it wont show my external drive as an option to download to. I am able to download any game from the Microsoft store and Xbox app to my external drive except Forza Horizon 5.

I disabled game bar from the settings because I heard that he is bad. does it make any difference if I enable it?
also yeah I can download it from microsoft store it's just that microsoft store is worse in terms of download than xbox app that is why I'm using xbox app instead of microsoft store I will try to download the game from microsoft store and see if the problem happens there also I can open the game from desktop if the problem doesn't happen to me but when it happen I can't open the game from : desktop , xbox app , microsoft store
and I don't have any antivirus or firewall I only use windows defender

I found the game in the Microsoft Store app. Seems like the game should be in the Xbox app though and when using the install link from the game page it opens the Xbox app.