Linux is your best shot, Chrome really isn’t that memory consuming nowadays.

When it comes to browser options on Windows, your primary options are going to be Google Chrome, Microsoft Edge, or Mozilla Firefox. Firefox works well for me and my needs, but you or your friend’s results may vary. There’s also browser’s like Brave and Vivaldi, that might be worth trying. However, Brave has some crypto stuff, which can be turned off, but may not be for everyone. As for Vivaldi, it’s settings can be a bit overwhelming for first time users.