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This may seem very simple and obvious to many, but I finally got around to stopping my office chair from squeaking when you lean back. A quick internet search led me to this Reddit post. There are some useful tips on Reddit. They describe the following:

1. Unscrew the seat with the 4 screws.
2. Slide the seatholder all the way forward so you can see two huge springs inside.
3. Apply lubricant on those springs and any other moving part you can see (the best lubricant for these springs is ideally WD-40 white lithium grease or silicone, in a spraycan with a long nozzle so you can reach inside. But any type of lubricating oil should work. Don’t use regular WD-40, it will only last a day.
4. Put everything back together and enjoy the silence.

I did exactly this and used silicone oil from FORCE. It was primarily intended for my bike, but I figured it would work just as well here.

I am currently using Typst instead of $\LaTeX$.

If you want to get the Typst code to e.g. copy the exercise description into your own document then you can use Mathpix to get the $\LaTeX$ code. Use Pandoc to translate the $\LaTeX$ code to Typst with