For a beginner, choosing a popular printer that has a big community and support, followed by somewhat low (but not the lowest) price. You should consider your other, more advanced needs/wants such as Klipper, high speed printing, and more advanced kinematics after you gain some experience.
A popular printer will have easy parts availability when (not if, when) something needs to be fixed or replaced. A lower price for a beginner is good because it lets you make mistakes without being too costly. Investing in something cheaper also a good way to test if you actually need to own and use a 3D printer. 3D printing is a time consuming and tedious process with lots to learn, and (in my opinion) really doesn't become truly useful until you can design your own objects via CAD program.
Ender 3 is an OK choice since it's popular worldwide and pretty cheap, although there's some things I don't like about it (V wheels, single Z screw, bowden, PTFE lined hotend). It's a good way to get started and make sure that 3D printing is something you want to spend time on. Be aware that because the Ender 3 is so cheap, you will be missing some desirable features such as magnetic PEI bed, auto bed leveling, and silent stepper drivers.