"Previous shutdown cause: 0" MacBook Air 2017 NEED HELP PLS

I checked with Mac Fan Control.

First of all please get rid of "Mac Fan Control". Those things can damage a Mac. Uninstall it according to its instructions.

Previous shutdown cause: 0 is the cause in terminal.

That particular shutdown code will appear if a Mac suddenly and unexpectedly loses power, which should never occur on a portable Mac. Contact Apple to have it evaluated: Official Apple Support. I recommend that you do not mention having used "Mac Fan Control".

The device that shuts down your Mac is the SMC chip (the power controller). It gets the shutdown command from someone.

Run a Verified reset on it.

Also run in terminal

log show --predicate 'eventMessage contains "Previous shutdown cause"' --last 24h

Code 0 stands for battery

0 Battery disconnected.

Check power supply/battery on a laptop, or the power supply for a Mac without a battery. On a laptop, the Mac should hibernate before the battery becomes so discharged it is unable to shutdown correctly, therefore if you see this shutdown cause on a laptop it may indicate a hardware issue with the battery or with the battery controller for reading the charge. Try resetting the SMC by connecting the switched off computer to power, holding ⌃control+⌥option+⇧shift and pressing power.

Run in Safe mode that would exclude all non-apple software.

That is what happened to my MBA 2017 and was able to clean it up

Shift (⇧): Start up in safe mode.

Start up your Mac in safe mode - Apple Support

Yes. Contact Apple as I wrote in my previous reply.