Why is my C drive suddenly full but I have nothing on it?

When your whole business is run off vibe coders and investors what can you really expect, I have a 237GB SSD boot drive that only has like 3 couple hundred MB in size apps installed to it alongside the OS and it still manages to eat up the drive, I only have 20gb left on it at the moment, I am actually kind of looking forward for them to finally discontinue W10, that way I can maybe clean install it and use it while knowing they aren't going to keep filling my drive with useless features and extra spyware disguised as updates, but then again steam machine is coming so maybe valve will be able to make Linux more mainstream enough for them to actually have to do something good for the OS for once or it will fail to appeal to people who use the OS for entertainment purposes just like their consoles did, there's nothing you can do on your end for this issue because anytime you clean up any space it will just take it back within a day or two, they just wanna point their finger at everyone else for their own inability to solve an issue they've had for decades now, but why create more important tools to help find and get rid of the unnecessary mess and clutter and instead just use that time to add spyware to sell your analytics.