C Drive keeps filling up and I can't figure out why (opens in new tab)

The C Drive on my laptop is a total 193 GB that I was able to keep at around 45-50 or so GB free until last year when the space started to fill up by itself. It now normally is around 28-32 gb free usually although briefly it was back up to 40 gb free after a Windows update, then came back down to to 28 gb after some weeks. Restarting the computer usually created some free space again, I'm not sure why.Its at its lowest now at 20-22 gb free and its starting to concern me. Anything I download ...