There are many different lighting options for the backyard. If you have electricity in the backyard, then you can install any LED luminaire, if you don't have electricity in the backyard and you don't plan to conduct it, then I advise you to buy searchlights on batteries or think about alternative energy, I found in this article https://bestlightguide.com/best-solar-disk-lights/
information on the disk lantern which run on solar energy. It really must be cool. They are easy to install and help save money on electricity. I plan to purchase such in my backyard.