I understand you still have a little denial because many people are in that stage but trust me, you can do it! It will be hard but it's best not just for your appearance. You will just feel better and your quality of life will improve.
Here's some tips.
>https://cookbooks.leannebrown.com/good-and-cheap dot PDF
This book is fucking amazing
>fruits and nuts
Nuts are expensive sadly, try to buy those from farmers market if one is close by. If not, there are many other healthy fats and proteins. Instead of pasta, eat beans, lentils, whole grains and starchy vegetables such as potato, carrot. If you still want noodles (they are yummy) limit your portion: instead of 2 cups noodle do 1 or 2/3 cups and eat a vegetable also.
Thankfully every frozen food is cheap. Meatballs are kinda bad though, go for vegetable and fruit, plus frozen chicken, chicken or turkey meatballs, vegetarian meatballs (made of rice or some other starch plus tofu. Make these yourself because otherwise it's gonna be expensive)
>snacking, blood sugar
Look at some tips for type 1 diabetics. Don't eat any sugar free foods but try to carry good snacks. The best cheapest snacks are the ones you make at home and put in a container or bag, not the ones you buy packaged in the store, if you always have snacks around your mental state will adjust so you won't feel pressure to eat them just because you have them. I like apples with peanut butter, banana and honey and seeds, potato with small tab of butter, spinach rolls (roll tasty foods in spinach such as meat, fish roe)
Same here. Use your favorite seasonings and explore new ones. If you are lucky to have a spice shop, go and smell them all. Spices are semi expensive but they last forever unless you're snorting them. You can also buy spice plants such as basil, oregano, etc from local markets for extremely cheap!
Also, identify your top 20 favorite fruits and vegetables and identify when they are in season.