What is the Ranger's schtick?
What are some of the wildernesses in D&D?
Enchanted sylvan forests
What beasts live in these wildernesses?
Wild woods- Deer, bears, wolves, giant weasels
Enchanted sylvan forests- blink dogs, displacer beasts, giant owls, unicorns
Massive deserts- camel, flying snakes, swarmss of insects
The Underdark- giant rats, striges, swarms of bats
Demonic plains- death dogs, demonic bears, nightmares,
What intelligent life in these wildernesses?
wild woods- bandits, druids, scouts, orcs, gnolls, green dragons
Enchanted sylvan forests- dryads, spirites, treants, hags
Massive deserts- sphinxes, mummies, blue dragons, yaun ti
The Underdark- drow, mind flayers, beholders, gray dwarves
Demonic plains- .... DEMONS? maybe...
What hazards are in these wildernesses?
Wild woods- forest fires, quicksand
Enchanted sylvan forests- portals to the Feywild
Massive deserts- Extreme heat and cold
The Underdark- Desecrated ground, poison spores, drakness
Demonic plains- Extreme heat and cold, demonic plants and fungi
Why do ranger have magic at low levels?
Because you have meet all the above at level 2 in this edition and you aren't expected to run away.
Poor fighters, barbarians, monks, and rogues. They better not ever choose an outlander or hermit background, because they'd have no choice but to run away all the time whenever they dare venture outside of a city.
Or maybe your assumption is not correct, and rangers don't need magic at low levels, because those mythical creatures all existed in those environments since day 1, and rangers managed just fine for decades. You seem to be mixing up what you want, with what is needed.