Problems Installing PC games via App

Hi mate have a look here there's some troubleshooting methods
https://support.xbox.com/en-GB/games/game-setup/troubleshoot-games-windows-10

Thanks, let's try this to see if you can fix the problem:

In case you installed the app via Microsoft store install it instead from here (don't forget to delete the current app)
https://www.xbox.com/apps/xbox-app-for-pc
<and vice versa, if you installed the app from there, do it now from the Microsoft store>

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If that doesn't work try reinstalling gaming services to see if that app is the one causing the problem:
Reinstall Gaming Services using powershell command

Press Windows key + X and then select Windows PowerShell (Admin).

Type or copy / past the following command and press Enter:

Get-AppxPackage *gamingservices* -allusers | remove-appxpackage -allusers

Restart the PC and Open the Xbox application.

A blue notification with the following message is going to appear at the bottom:
"This app needs an extra component. Gaming Services is needed for playing some games. Administrator approval required. Install"

Select Install to reinstall Gaming Services, once installed check again

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If the issue persists, and just to cover the possibility. Did you tried using a different wifi network?
For example sharing mobile data via wifi network and connect your PC in that way

That did not work either unfortunately

I'm sorry it did not work. I can suggest you two more steps if you want to:

Please see if there is any older device linked to your Microsoft Account:

Go to https://account.microsoft.com/devices, sign in, and search for any old device.

Select Show details > More actions > Remove.

Select I'm ready to remove this device > Remove.

After that, go to: https://account.microsoft.com/devices/content and remove the old device from this too.

Find the device you want to remove and select Unlink.

And try to create another Local Account:

Press Win+R Keys.

Type netplwiz and press Enter.

Click Add button.

Click Sign in without a Microsoft Account. If you do not see that option, disconnect from the Internet.

Click Local account if prompted.

Type the username you want, and the password. You must also specify a hint. Click Next.

Click Finish.

Make the new local account an admin account:

Select Start > Settings > Accounts > Family & Other Users > Select the Account Owner Name (you should see "Local account" below the name) > Change Account Type.

Select Administrator, and then select OK.

Sign in with the new Administrator Account.

After that:

Go to Start > Type Services > Open it.

Find all Xbox Services (Xbox Accessory Management Service, Live Auth Manager, Live Game Save, Live Networking Service). Right Click > Properties> Set the startup type to Automatic. Also Start them.

Go to Start > Settings > Accounts > Sign-in Options > Privacy > Uncheck "Use my sign-in info to automatically finish setting up my device and reopen my apps after an update and restart." Restart your PC.

Try to install the games on this new local account to see if your actual account is not corrupted.

I appreciate all your help, but that also did not work. I guess it just will not work on my pc.