"Prospective park rangers must be US citizens, possess a valid US driver's license, and be at least 21 years of age. Prospective park managers generally have a bachelor's degree in the natural sciences such as botany, zoology, geology, environmental studies, or ecology.Oct 15, 2020"
For your state, see https://azstateparks.com/employment/ for state park ranger, but should also consider your state's fish and wildlife management jobs on https://www.azgfd.com/agency/employment/.
Wanted to add to this and will hope someone with experience in these jobs can comment.
So you will see there are various components to the jobs:
1. Enforcement of the Law - both jobs will have law enforcement as a component. It looks like this is more so for the state-level jobs. That could range from enforcement of park rules, fish and wildlife rules, state and federal law.
2. Fish and Wildlife Management - appears that this is more a component of federal park ranger than state. For state, if this is your interest, you would want to look into fish and wildlife jobs.
3. Conservation Management - would be more a component of federal part ranger.
4. Facility Management - would be a potential component of both type of jobs, being assigned to specific parks and helping manage those parks from collecting fees to running educational programs.
So you should consider what aspects of these jobs you are interested in, law enforcement, fish and wildlife or conservation management, education for example. There may be other careers that incorporate your interests as well.