Even with adblockers, piholes, and limited sandboxing, there are things on this wide wide internet that would loooooooove to get their bony hands on a machine like yours. Microsoft stopped providing security updates to regular 7 and 7 Embedded users ages ago. Firefox drops support for 7 next year because they are no longer certain they can harden the browser against future system-level exploits.
7 had a much longer life than anyone expected; it began life in a time when 2GB was more than enough to play simple games and handle spreadsheets on displays limited to 1920x1200, when comouter graphics cards had 256mb of RAM, and where hard drives indeed did go brrrrrrrr.
For much of the era of personal computers, the service life was expected to be about 5 years, with 7 years of security updates expected. Your windows 7 machines have long exceeded that. Unlike Cupertino, Redmond still supports your hardware for a few years more yet, if Internautting is your desire. It's called Windows 10 22H2, and it's available now, at no additional cost.
If your tasks are entirely offline, by all mwans, continue to use Windows 7, which is, in my opinion, the second best looking OS microsoft ever emitted. (Vista, you sly fox. You haven't aged a day.)