Linux is generally more secure than Windows, or at least less often attacked.
Linux Mint is a good choice for people coming from the Windows world.
One difference between Linux and Windows is that Windows version X (10/11/ whatever) looks and feels the same across all Windows machines running that same version. Windows 10 is Windows 10, apart from maybe changing the desktop wallpaper.
Linux, however, is slightly different, in that there are more than one desktop environments available. Any given version of Linux can have the Gnome desktop, or KDE, or LXDE, or several other choices. You can even switch desktops on the same machine without reinstalling.
Other people here can chime in on what desktop is the most Windows-like. I've heard that the base Mint install does a very good job making Windows users feel at home. I think MATE and Cinnamon are the two most common desktops for Mint. I also hear that
XFCE is a good desktop with a lot of Windows-like features. I personally use the KDE desktop almost everywhere, on Ubuntu and Fedora Linux. I don't have any direct experience with Mint.
But as I said, Linux Mint out of the box is pretty good, and there are ways to change the desktop later, if you want to.
A lot of people dual-boot between Windows and Linux. If you have some must-use Windows application that you can't do without, that may be the case for you. PhotoShop and one or two others come to mind. But there are so many equivalents to Windows programs that you may find you don't need to jump back and forth.
Good luck, and let us know what other questions you have.
-Tom