Apple MacBook Pro (13", M1, 2020). I don’t have another Mac to do that Mac to Mac rescue thing

Yes I know I need to clean the screen.

So randomly two days ago, the computer fan started running REALLY loud for what seems like every time I used it, even when doing nothing or things I have done to never have had the fan to turn on.

Then this happens (see video):

https://imgur.com/a/baWA3hH

It alerted it to tell me to reinstall macOS but I don’t have enough space. I don’t have another Mac to do the Mac to Mac thing but I’m wondering if I can:

  1. use Disk utility to wifi download macOS to the flash drive
  2. boot to the flash drives “desktop”.
  3. view the files on my internal Drive from the flash drive,
  4. delete things to free up space,
  5. wifi reinstall macOS from disk utility onto my internal Drive then everything should be fine right??

USB stick I want to use : SanDisk 64GB Ultra Dual Drive USB Type-C https://www.amazon.com/dp/B01EZ0X3L8?ref_=cm_sw_r_apin_dp_2W0JC4G3TF4FD73GRDN3&language=en-US

In the name of Satan PLEASE I don’t need comments saying I should have had free space or a backup drive or something something

I had job interview and all my files were on my internal drive so I’m not felling happy about it…

Since the fan was running does that mean that a hacker was going through my internal drive and my Mac was using more power so it needed the fan to keep the temp cool?

What’s weird about that up⬆️ previous paragraph is that the fan would turn on when the Mac is cold to the touch like as soon as I would turn it on.