To make your soup more flavorful you can sear the meat or brown the meat before adding the meat to the soup.
Searing or browning the meat brings out the flavor in the meat and makes it taste much better.
You can also add some spices to the soup to help bring flavor to the soup.
Also adding some fresh herbs and roasting the vegetables before adding it to the soup can make the soup more flavorful.
If you like spicy foods you can also add some Jalapeno Peppers or Chili Peppers to the soup or even mix in some Taco Seasoning with your soup.
Adding some butternut squash, roasted garlic, roasted red pepper, roasted paprika or even just some regular paprika.
Another way to add flavor to soup and make your soup more flavorful is to make a spice blend for the soup that consists of celery salt, parsley flakes, garlic powder, sea salt, summer savory, marjoram, thyme, black pepper.