I dug out another phone I have, so now I can post here. I do have a computer, but I don't have a camera to take pictures of lighting to post here. At least the phone I have now can take higher quality pictures.
You could always transfer the pictures from phone to computer before uploading. There are a few ways to do it, using various cloud services or just a USB cablw. I personally like to do that with my phone pictures since I like to do some adjustments and cropping before uploading. Plus, I much rather prefer typing out longer descriptions on a physical keyboard.
If you're looking for a cheap dedicated digital camera that works with your computer, you can probably get one for a low price at a thrift store. I see them there all the time, even some better quality models with 10+x optical zoom. Picture quality wise, they're probably better than most older phone cameras due to the larger sensor size.
