Unless it's IPSC or IDPA practice day at the range, reloaders like us I think are in the minority. At least they are at the ranges I frequent. While at the range you'll recognize the non-reloaders because they'll have boxes of factory ammo in front of them. Most ranges have "pick up your brass" policies, and asking such a person if you can pick up their brass usually results in a positive outcome because they think you're doing them the favor!
This time of year when a rapid snow melt happens often reveals brass on an outdoor range ground so thick you can't walk without stepping on them. If your timing is right, you can walk away with a 20 liter bucket full of 9mm before you get tired of being bent over. It's also a great time to retrieve other calibers that are normally picked up but get lost in the snow, such as .45 ACP.
If you have friends or acquaintances who already shoot in your area, ask them for brass. If you don't have a tumbler, you'll need to invest in one sooner than later. Even if you buy new brass (which I've never done), you'll need to clean them after shooting for reloading again (and again, and again, and....)