ISOs downloaded from unofficial links (like those found on forums or YouTube descriptions) could contain pre-installed spyware. It is always safer to use a standard ISO and run a trusted debloating script yourself. Official Windows 11 Links
One of the main Russian-language trackers where SanLex officially uploads new builds. windows 11 sanlex link
Even expert users hit snags. Here are the most common problems and fixes. ISOs downloaded from unofficial links (like those found