I have an arguably bad piece of advice, but one I hadn’t seen in skimming the replies.
You could always install Windows in a VM. Libvirt and virt-manager offer a pleasant GUI experience so it’s easy to do. If you give the VM a heavy resource allotment (while leaving a reasonable amount for the host) it should still perform well. The VM video driver is the only place you take a not insignificant performance hit, but for A/V manipulation I don’t think it’ll matter. Unless you use GPU based video encoding. In which case it’ll be CPU bound now so slower. You can potentially do PCI pass through to your GPU but that adds complexity.
A big downside here is that as far as Windows is concerned, this is different “hardware” so it won’t activate based on your physical device. As I recall, it only allows the use of one core while unactivated which is pretty much unusable. So a pretty hefty expense relative to a personal VM, I think. But it is an option.
It sounds like your ask is for a recommendation to back up personal files from disparate locations to a server.
I use a self hosted Nextcloud instance for this purpose.