I want to live not just exist so my efforts are more feeble.
I buy good house brands and brand names for others - the taste of the food is more important than price.
I buy Blue Bell ice cream. It's great and it still comes in half gallon containers so it's not really any more expensive than house brands. With that said Walmart's house brand is pretty dang good. Better than all but Blue Bell.
We cook a lot but we do it well so it's usually not any cheaper than eating out.
Wastage is a big problem with cooking yourself. You buy fresh food for meals and then schedules get changed and you can't cook and by the time you can the food's gone bad.
When I eat out I never eat Pizza unless it's from a buffet. The local Mama Rose's Taco house has a taco meal for $3.33 every Tuesday and my wife and I share one. We simply can't eat as much as we used to so we share most meals.
I have a burger place I like where they are good enough I don't mind spending $5 for a burger.
We combine several trips in town in to one.
Costco and Walmart have some fabulous house brands. Walmarts chunky style soups beat Campbells any day of the week. Costco house brands of food and everything else are always at the top of the list in Consumer Reports and I've found them to be equal to or better than most of the brands on the shelves - and they are less expensive.
Sam's house brands aren't nearly as good as Costcos and besides Sam's parking slots are much narrower so your car is more likely to get dinged.
Costco bakery items are also moister and tastier than Sams.
Both Sams and Costco have super cheap hot dog or pizza meals for $1.50 - $2.50 DRINK INCLUDED. So anytime I'm heading near there I'll eat there. At that price I'll even eat a hot dog and try not to think about things like pig eye lids that are in them.