Just dropping in to thank everyone for the ideas, encouragement etc, and a bit of an update.
I bought some onions and added them to my edible-but-not-very-tasty rice, and fried them together, and it tastes a million times better. I have pasta and tuna as backups, and will keep referring back to this thread every time I shop. The positivity in the thread also got me to clean my fridge, which was absolutely filthy (I don’t even know how it got like that) to mark the beginning of new kitchen habits. The fridge is still depressingly bare, but it’s clean and that makes it less depressing haha. It’s nice having more bench space where the microwave was… it almost looks like a kitchen now.