You can have multiple kernels installed, but you can only use one at a time.
Other than what I’ve already said, it is mostly up to the hardware and what the user wants out of the kernel. The choices can be pretty daunting, but I would suggest you to do more searching to figure out just what you are looking for.
All that being said… Most Garuda versions usually uses the Zen kernel out of the box, for good reason I would like to think 
Most modern hardware should work great on the Zen kernel.
I’ve been using it for years with gaming on Linux and I rather like it.