Whenever I save my renders, I can’t find them, and if I do, all I see is a bar line across the area I want to upload it to. Help me! I don’t know what to do!

Well, I’m not quite sure what your problem is, but one way around it would be to press CTL+ALT+Printscreen. This will take a screen shot of the active window that you have. Then just paste it into paint or whatever.

Your renders should save automatically to the Blender directory. (normally C:\Program Files\Blender Foundation\Blender.blender)