Need source for new wheel

While exiting our bank's drive-thru I turned the wheel a bit too soon and the right rear wheel scraped the high curb rather hard. Ever since then, I've been losing air in that tire. I pulled the wheel and checked for leaks but found none. However, it loses air when I drive which causes me to think the wheel is the problem whereby it loses air when the car makes turns and the tire comes apart from the wheel. The proof of this was the car sat for two months and no air was lost. My questions are this;

Is there another source for wheels other than the dealer? I suspect a junk yard is one source. Any other sources?

What other Prius years will fit the car? Mine is a 2005.

I check the spare but it's yellow and only good as a spare.

Thanks