Sounds really tough for you, job hunting can be hard, really hard. Employers often look for certain people - you mention amazon workers with less language skills, they’re employed because they can’t kick up a fuss and will take being pushed harder on the whole. You could play dumb maybe to get a job to get that maybe? My only other thought at the moment is to try recruitment agencies if there’s any about where you are and you’ve not rhoughtbof that yet.
Vegetable stir-fry, curry or similar should be easily do-able. There’s plenty of fresh veg that will keep long enough out of a fridge or canned asian veg is decent. Tomato or pesto pasta. Stew made with canned beef isn’t bad. Omlette.
Do you have a cool bag/box? Grab a bag of ice and you have a fridge for a few days. Even a plastic box would do the trick.