So, I checked the store permissions and it turns out that the option to access internal system storage is not enabled, however I can't enable it because it appears blocked.
The error code that marks the system report is '-7', however, there is nothing on the internet that explains how to fix it. I have a Mi 10t Pro with Android 12 (Xiaomi EU - MIUI 13) and a very serious problem, I have tried to download apps and games from the Google Play Store but I always get an error 'A problem occurred while downloading, try again'. I have written this post because I have not found an answer or solution to my problem.