I have not tested it, but on LibreWolf docs there was a link to this repository to auto-update the Windows version. It’s 3rd party, but also FOSS.
Do you have any good reason to stay on Windows? If not, try out Linux and don’t fear it. It’s not just better for privacy reasons, it also makes more fun to use. At least it is my opinion. What applications do you use on Windows? If they’re not FOSS, you may can start with these. Otherwise you already have already 70% of the Linux experience and transition should be easy.