As Elementary OS says “The thoughtful, capable, and ethical replacement for Windows and macOS”
Elementary OS is a very well designed, easy to use Linux Distribution built on top of Ubuntu Linux. It is targeted towards current or former Windows and MacOS users and does a very good job. Don’t be fooled however, Elementary OS is quite capable for most peoples’ needs.
You are encouraged to make a donation to help support them. Unfortunately, they do allow $0.00 donations.
Taking an Ethical stance, a $0.00 donation is acceptable in order to try it out, however, a real donation later helps a great deal.