: Tools like the Heidoc Windows ISO Downloader were traditionally used to pull files directly from Microsoft servers, though their availability for Windows 7 fluctuates.
: Use a tool like Rufus to flash the ISO onto an 8GB or larger USB drive.
The safest way to acquire is to use official or verified archival sources rather than pre-cracked versions, which are often bundled with malware. Where to Safely Download Windows 7 SP1 ISO
Windows 7 reached its end of life in 2020 and no longer receives free security patches. If you must use it: