I have had issues downloading ISO from Microsoft website for a long time now, I usually end up only finding links that work for a “media creation tool” that won’t even run on any PC I have tried it on.
Use Rufus, you can download ISOs directly in the program and use it to make a bootable USB from that ISO in the program. This has been my way of getting a Windows ISO for the past few years, never had a problem with it so far.