One thing I would recommend since I think you’re going for is privacy is hardening your VirtualBox at least at the host level
This is super easy
Your VirtualBox manager should have a little yellow gear for settings,
Click that
When the settings wizard opens,
Go to General > Expert
You’ll see some tabs like “identity, features, Description, and Disk Encryption”
Check the box “encrypt disks”
Then in the drop down you can choose either 126 bit or 256 bit AES
This will have you set the password and that way EVEN IF someone got access to your physical machine and had a password to get in, they would need the password to open up your Live Linux environment
You can also harden at the guest level but that’s a little more nuanced but good to do if you plan on file sharing