With Linux you get a lot of choices. Here are some distros you can try out!
Ubuntu is a great distro, enjoyed by both beginners to Linux and longtime users. It’s supported by Canonical, and is also quite popular in the Enterprise.
If you don’t like the look and feel of the default Ubuntu desktop, Kubuntu may be for you. It uses KDE as the DE (see What is a Desktop Environment?), providing a similar feel to Windows, but also allowing quite a bit of customization.
Something a bit different, Fedora is a separate distro from Ubuntu. All of the same software from Ubuntu will run on Fedora (Linux software will work on any distro), but you’ll find newer software available on Fedora. It also provides a much more simple GNOME DE experience compared to Ubuntu. Fedora is the built by Red Hat, who uses it for their Red Hat Enterprise Linux distribution, a renowned distro used by 90% of Fortune Global 500 companies!
Manjaro Linux is quite a unique distro. In the past few years it’s gained a lot of popularity, mostly due to the popularity of Arch Linux, a distro geared towards advanced users that is both light and packages the latest software. Manjaro then, is the essence of Arch, but all packaged up and ready for usage right out of the box. If you want something unique and that has all the latest software (with a lot of choices for look and feel), choose Manjaro. Be warned though, Manjaro may not be as reliable as some of the commercially support distros (like Ubuntu and Fedora).