Canon EOS Rebel T7 DSLR Camera

I bought this camera to take pictures of jewelry on a mannequin indoors in a sunroom with natural light. I previously was using a Panasonic Lumix until I dropped it accidentally. My husband offered to let me use his Panasonic, DMC-FZ18, but I wanted to try this Canon, and so I used both to compare their pictures. I should mention that I am not an expert with camera use, but I wouldn't say I'm a novice either. At first, I had difficulty taking any pictures at all with the Canon because it would not focus using AF, the LED screen, and Intelligent Auto. Since I had the setting "Focus Priority," the camera won't take a picture without focusing. The lens just kept moving back and forth, in and out of focus. After watching a YouTube video to figure out what was going on, I learned that the camera focuses differently when you use the viewfinder versus the LED screen called "Live View Shooting." I never use the viewfinder when shooting products, and so the answer was to switch to "Quick Focus" found in the settings, and so I did, and I spent the day taking about 300 pictures of products. I also used the movie button to record video of these products. At the end of the day, I transferred my work to my computer using the move files function. I was stunned to see that only my movies were saved to the SD card and not the pictures. After having some sort of stroke, I did a Google search and found that other people had the same problem. Here was one answer to someone who had a similar problem: "When you use the [Quick Mode] AF option, that initial instance when you press the shutter button (should be half-way) where the live view image turns off and you hear what sounds like the shutter releasing to take an image is only the camera performing the autofocus. No picture is taken at that point. When focus is achieved, you should get a green AF point and the live view image will reappear. At this point, press the shutter button completely to take the picture." What is deceptive is that, pressing the shutter to take the picture, completely sounds like you captured the image. You didn't. You must press hard and wait for that beep and second shutter sound before the picture is taken. The only reference to this in the Basic Instruction Manual is on Page 16 where it says "In Live View shooting, the camera beeps after focusing. Shoot (press fully)." That admonition to "press fully" was apparently lost on me. The next day, I took 300 pictures of the same products: 150 with this Canon camera and 150 with the Panasonic Lumix. When I compared the quality of the picture, the Panasonic pictures were clearer and more in focus. The Canon Quick Focus and Intelligent Auto focused clearly on the center of the necklace but not the entire necklace, and this was true of zoomed shots as well. My videos were also completely out of focus, which wasn't apparent when I was looking at the Live View Screen. If I was better at working with cameras, I could probably overcome the focus issue by using a manual setting or a different custom setting, but I don't have the time right now, and I'm not sure if this camera just doesn't do low light close photography well, and so I will be returning it.