This is one of those awful mistakes that people make, thinking that they don't need to back up their Mac before doing something big. The minimum system requirements for installing and using VMware Fusion 11.5 are: Hardware
Check your system and hardware requirements.Here's how to get VMWare's Fusion 11.5 on your Mac and then install and run Windows 10 from within your macOS operating system without having to switch hard drive partitions. VPN Deals: Lifetime license for $16, monthly plans at $1 & more
