Please try this if it helps.
Uninstall Microsoft Store app
Press Windows key+X then select Windows PowerShell/Terminal (Admin)
Copy and paste the command below then press Enter
get-appxpackage *WindowsStore* | remove-appxpackage
After that, open Microsoft Edge
Please try to visit https://store.rg-adguard.net/
In the drop-down list left-side menu, select PackageFamilyName. While on the right side, select Retail
Search for:
Microsoft.WindowsStore_8wekyb3d8bbwe
Click the check mark
Download: Microsoft.WindowsStore_11811.1001.2713.0_neutral_~_8wekyb3d8bbwe.appxbundle (49.07 MB)
In case it was blocked from the browser, click 3 dots next to the download file
Select Keep > Keep anyway to complete the download process
Double-click the downloaded file to install
Standard Disclaimer: This is a non-Microsoft website. The page appears to be providing accurate, safe information. Watch out for ads on the site that may advertise products frequently classified as a PUP (Potentially Unwanted Products). Thoroughly research any product advertised on the site before you decide to download and install it.