Most of the torrents you are seeding have 0 or 1 leecher. Think about it like this. There are 28 seeders and 0 leechers on the torrent. If we imagine that this torrent is a street, and all the seeders own a cake shop on this street. So that means there are 28 cake shops selling the exact same cakes, and no people walking down the street wanting to buy cakes. How are you going to sell a cake if no one wants a cake?
Alternatively, for the torrents you're seeding that do actually have seeders, There are 329 seeders and 16 leechers. Imagine a street with all 329 seeders owning coffee shops on it, and only 16 people walking down the street wanting to buy coffee. How likely is it for any one of these 16 people to walk into your coffee shop?