First of all, this is a user to user forum. We are all just users like yourself. There are Adobe staff people who contribute frequently, but for the most part you are communicating with other users. As to your questions:
1. The destination for your imported photos is completely controlled in the right-hand column of the import dialog. In the tree of possible destinations, you choose the drive and main folder where you want the photos imported. Then, if you want them in a separate subfolder, above the folder tree you would choose "into one folder" and then "into subfolder" and then name the subfolder. The following video might be of help to you: Lightroom 5: Importing Your Images - YouTube
2. In reality, it's more reliable to move images using your operating system with Lightroom closed. Then, use these instructions on how to get things synchronized. Lightroom thinks my photos are missing - how do I fix it? | The Lightroom Queen
3. I'm not sure that creating a new catalog will solve the problem. You need to learn how to import photos.
4. How many "other" images are there supposed to be? If you go to your system browser, do you see more images in that folder?
Thank you. I know this is a users forum, not at the import topic they said to post here. And, since Adobe staff sometimes participate here, and tech support is the one who has caused some of the problems by taking control and moving files I am hoping to get forum users help , and possibly from Adobe staff.
I'll try to import again from a camera card myself and record the steps and results.