I wish I could heart hug your miserable feels away. ❤
The salads easily last us a week, and beyond. I use greens, like romaine, kale, spinach, etc. so they don't wilt quickly. I also use a salad spinner to clean and dry them. Drying them really well before bagging them, or putting them in a bowl, helps to slow the wilting process, I've found. I also put a paper towel in the container I'm storing them in to absorb moisture.
Even after spinning them dry, I let them set underneath the ceiling fan for a while and toss them a few times so they get even more dry. Using a dish towel to pat them dry could help also, in the absence of the fan option.
I also never trust the store bought greens that say "fully washed and ready to use". I wash them again for my own peace of mind.
I also love the butter lettuce varieties and arugula, etc., but add those per serving rather than mixing them all together. Same goes with the sprouts and microgreens. I make a lot of smoothies, so I like to be able to reach in and grab the already washed greens rather than having to wash them each and every time. Arugula is too bitter for smoothies, so I keep it in its own container.
Any veggies that have a high water content, especially cucumbers and tomatoes (they'll wilt everything overnight and make it super mushy), and even bell peppers, onions (especially if they're super strong - so they don't overpower other flavors), and such are kept separate and just added in per serving.
Other things like carrots and celery can be mixed in without fear of them causing the greens to get mushy. I tend to keep them all separate and have a salad buffet, so to speak, so I can still use all the prepped ingredients for other things if I wish, like stir frys and soups.
I use the tinned chickpeas (drained and rinsed really well) to make veggie versions of:
-chick'n salad (made with all the typical ingredients except using chickpeas instead of poultry)
-tu-not salad (using all the typical ingredients except using a nori wrap instead of a can of tuna fish)
-eggless vegg salad (using all the typical ingredients except using a small amount of kala namak salt rather than eggs)
I also substitute vegan mayo instead of regular mayo. They last 4-5 days, easily, and make great salad toppers, romaine boats, lettuce wraps, sandwiches, etc. Slice a cucumber in half, scoop out the seeds, and make a cucumber boat. Or slice a cuke and make cuke sammiches. Stuff small sweet peppers, use as a cracker/veggie dip, etc.
A favorite bean salad we make is a mix of whatever beans we have on hand (drained and rinsed really well) with chopped red onion (or sweet), chopped bell peppers (if we have any), chopped celery, and a generous portion of white balsamic vinegar (or regular balsamic). Parsley and green onion make good additions, also. Some folks add green beans, too, but we don't. Stir really well and let it set for a while to absorb the flavors. Tastes even better the next day. Lasts a week, easily.