Earlier quoted context omitted.
I have found that a little wood glue on the joints goes a long way in the IKEA furniture I have.
That's a great idea, I'll definitely be doing that in the future! I've added L-brackets to key spots on Ikea furniture before, and it often increases how sturdy it feels by an order of magnitude. Just the other day I fixed a 5 year old Billy bookshelf (that I broke while moving it, while partly loaded with books) by securing the cardboard back with screws instead of finishing nails and adding a couple metal brackets…
I just like IKEA so much because they have well designed stuff for good prices, even their more expensive things relative to their cheaper stuff. And with mild care and tweaks during assembly, it can be quite solid. I wish I had thought of the wood glue sooner as well because I’m too lazy to redo my bookshelves.