Adding personal Media to Kodi 17

I have the latest release of Kodi 17. I also have a lot of personal media files that are Video stored on my computer. I have two problems

1.) In Kodi 17 under the myMedia “Movies” section I have added the full path where my personal videos are located and then I add them. I get a option to select if its a movie, or tv show and I select the option movies. Then I get an option to choose a database scraper to get the meta data for the video. I select the option not to use the database just use local machine. After that it starts indexing the videos. Then I go to the homepage of Kodi. I scroll up to the Movie section and it does not show thumbnails of my videos. It say I need to add files. However If I click on the Movies tab it takes me to the source which I can click on and then it shows me all of my videos.

2.) As stated in question 1 lets say that I do the same thing but I choose to use the database scraper. Doing this will display a thumbnail on the hompage however the thumbnails are wrong because its my personal movies that I made.

3.) As stated in question 1 let say that I did the same thing and I used the default database scrapers, You would assume that I am going to get a thumbnail on the homepage however if the media path is goes through 5 subfolders directories then you still do not get thumbnails on the homepage. This also happen if you are pulling for sources like ftp, web, nft, Unpu