I think Lena nailed it. You can get all the nutrition your body needs from a vegan diet, but all the processed foods you named sound like you have a lot of changes to make. You should do a search for raw vegan diets to get a good understanding of which foods are needed for all the different nutrients and proteins you need to stay healthy. You're not even vegan, so it should be really easy once you have an understanding of what your body needs and which foods provide what. It's a shame that most processed foods are so unhealthy and use so many goofy ingredients when it seems like most of them shouldn't have to, but that's how it is.
Or you could just make up a plate a couple of times a week with greens, a baked potato and a medium rare filet mignon. Maybe a little cottage cheese... no msg there. The steak could be replaced with a nice trout filet even. You can start making a lot of vegetable based soups with beans and lentils, eat salads and yogurt with flax, hemp seeds, chick peas, grated almonds etc. There's plenty out there to have an unlimited vegetarian menu that gives you everything you need.