I only buy fresh stuff if I’m going to cook it that day, otherwise frozen or canned. Then I also always buy food that takes little to no preparation and/or make a lot of anything I’m making when I have motivation and freeze that for the days (which are most days for me) when I’m stuck with no motivation. So I always have some food that’s easy to make or just heat up that won’t go bad (at least within a few days). I can’t say how it is where you live, but here in Sweden there’s been a great increase in the variety of frozen veggies etc. Stuff I’ve never seen before like many kinds of beans, mushrooms, avocado, some salad types etc. which is awesome since they keep for much longer.