Since the official Microsoft Software Download page now only lists Windows 10 and 11, you must look to alternative but reputable sources:
Windows 7 was the last Windows OS to ship without a strict 64-bit requirement. ISOs are generally categorized by architecture: download iso windows 7
The only legal and official way to obtain a Windows 7 ISO today is if you possess a valid Retail Product Key. You can download the official ISO directly from Microsoft's "Recover your Product Key" page using that key. If you do not have a key, Microsoft does not provide a download option. Since the official Microsoft Software Download page now
Windows 7 was released in six major editions, though only the first three were widely available for retail purchase. The ISO structure often contains one or multiple of these editions: If you do not have a key, Microsoft