You could also "virtualize" the different tasks that you do by merely using a distro like Linux Mint as your base OS + VirtualBox. The base OS should NOT be used for anything else except to run your VMs to avoid it getting infected with malware and being exploited.
Isn't
Qubes OS more suited if you want to virtualize everything?
It's also worth to mention VirtualBox usually is slower than KVM even though it's easier to setup and use.
Look for an LTS version, they are supported for 10 years usually after being released. In case you are using a bit old laptop, look for a lighter distro like XUbuntu to make the best out of your resources.
LTS version for which Linux distro? While Ubuntu LTS receive 10 years support, you only get first 5 years for free unless you willing subscribe Ubuntu Pro.