I’m shocked at what an unpopular thought this is. Like… If you go out in public, there’s a very real risk that people in public will see you. If that’s a concern you have, then you should take steps to not be seen in public. To me, that would mean not making my presence obvious when visiting a bar.
Camera or not, if people are looking for you, they will find ways to look for you in public places. You should always assume you’re being watched, because you probably already are.
WSL is pretty good these days. Dual boot with Windows is still a pretty risky move with how easily Windows will overwrite your boot loader. I usually recommend you pick one os or the other rather than dual boot, so I’m in favor of WSL or virtualbox. Personally, I have never cared for needing to reboot just to switch operating systems. I tend to stick with one and the second one does nothing but take up disk partition space.
WSL lets you run both simultaneously without rebooting. Virtualbox lets you do the same with extra setup. Virtualbox makes it easier to do GUI setups than WSL does, and the network configuration is a little more obvious.
The best option is to get a second machine so you can run both. If that’s not an option, virtualbox is the better choice for learning. If you just want a Linux environment on your existing setup (similar to using a Mac) then WSL is usually good enough