Here is some purchasing camera advice as of 2022. Supply issues and inflation will affect these recommendations.
Always look to see if there are newer models but also maybe buy the older model of the price is right.
Used Digital Cameras can be an a great way to get a more pro model for less:
Any fully manual capable digital camera will do. That’s a camera in which you can control Apertures, Shutter Speeds, ISO, and focus individually.
Around $1000
https://www.dpreview.com/reviews/buying-guide-best-cameras-under-1000
More Best Cameras by Category
https://www.dpreview.com/reviews
(Just make sure these have full manual control)
Here are some recent ones: (I use B&H Photo links for prices, I do not only recommend B&H Photo. I also recommend Adorama, NY Camera of Princeton, Unique Photo, K&M Camera, Allen’s Camera, and KEH for used cameras.)
https://www.bhphotovideo.com/c/product/1708097-REG/canon_eos_r10_mirrorless_camera.html
https://www.bhphotovideo.com/c/product/1511273-REG/nikon_1633_z_50_mirrorless_digital.html
This one is a little more and also a great student camera:
Everything is hard to find right now and more expensive as well unfortunately.
-Professor Dalton