Hello, I have a big problem. I installed Python using the manager, but there are no uninstall programs in the Windows task manager, and the uninstall command py uninstall --purge doesn't work. Thank you for your help. Regards.
py uninstall --purge uninstalls the Python installations, not the install manager itself. You may simply delete the install manager executable after running the command. If py does not point to the install manager (you should run py help to check), you may want to check your PATH or execution aliases tied to the Microsoft Store.
The uninstall programs you likely need are going to be in “Installed apps” (search for it, or right click on the Start menu icon and it should be at the top of the list). If you’ve done --purge, then there will only be the install manager remaining, and so you can remove it from there.