If you don't need Windows for a specific thing that Linux can't do (or do easily), then Linux may be your best bet. There are several Linux "distros"...
Yes, Firefox 115, also known as Firefox ESR. also, good idea to install and run Microsoft Security Essentials for your AV software. Same definitions...
The benefit is a more secure system. No Windows updating system is trouble free, for that you need Linux. But Simplix does work very well. with your...