I would look at your highest cost items and then try to find ways to save on them. I know cereal can be very expensive, you can switch to generic in those big bags to save money or stock up when it is on sale with coupons. Meat can be another huge cost, I personally don't buy steak on a regular basis, its a health concern for my husband and not cost effective. I stock up on chicken, fish, shrimp, and ground turkey when it is on sale. Lunchables and hot pockets are convenient but considering what you get not always cost effective. You can easily make your own lunchable meals by using bento style boxes and cutting up meat into small squares. Pizza is cheaper if you buy crusts and ingredients on their own vs. a whole pizza. You sound overwhelmed too so I would start small with one or two changes. Also there is this myth that you can't get basics on sale. Eggs for example will turn up on sale at a great price every so often. My local store had them 99cents a dozen so I got two. I will use this as a chance to bake some items in the next 1-2 weeks vs buying (for example we will have cake for dessert using a box mix I got on clearance instead of ice cream). Truthfully they don't taste as good as high quality ones, so I also buy cage free organic, but at Trader Joes who has a better price.
There was a recent thread on here about rotating grocery stores and how many you visit in a week. You might want to look at other stores in the area and keep your receipts so you can compare prices. What I do is rotate where I shop but stick to one store per week. So at
Walmart I stock up on things not on sale elsewhere but at a low price there, I go to the Acme one week and get things on sale for cheap (such as the eggs or fruit they have featured on sale) but avoid pantry items as the full prices are very high, Target is middle of the line- never too expensive but rarely anything dirt cheap unless there are coupons involved.
As for couponing there are websites that do the work for you. This is how I learned how to coupon, I used to check the forums for lists of deals with coupon matchups. Once I learned the ropes I found it took too much time but now I go it on my own.