Windows 10 can't boot

Hello everyone! this problem occurred to me like 2 days ago yesterday, it was really late (like past ~1 AM) and i tried to do something before i went to bed, but then my internet went out, so i tried fixing it and getting it back up, eventually opening up command prompt to enter a couple commands to fix it, then i tried restarting my computer.

Here's the problem, it seemingly got stuck on the "Restarting..." screen for what felt like ~10 minutes, so i tried cancelling the restart, by repeatedly trying to bring up the CTRL+ALT+DEL menu (i probably pressed that button combo ~100 times (i kinda counted)) and then, my PC bluescreened, it was a different error message from what i'm getting now, i don't remember what it was but after a google search i found out it was probably "WINLOGON_FATAL_ERROR"

It tried rebooting like 2-3 times, bluescreening each time, the code it gave me this time was "0xc000021a" (just that) before it went into a diagnostic/repair mode (like the windows logo, black background, spinny white thing, and text saying something about diagnosing or repairing)

It was on that same screen for more than an an hour, then i had to just shut down the PC for the day by holding down the power button.

Here are all the fixes i've tried so far:

• Yesterday i've tried shutting down my pc till tomorrow (today) and then some, then unplugging everything but mouse, keyboard, and monitor before turning it back on again
• Booting to WinRE and using the command prompt there, idk whether this is just something weird or what but when i ran dir on C: it didn't list folders such as "windows" or "program files", etc etc, only the stuff i myself put there
• I tried doing chkdsk, and also with /r, /f, and both, the normal one told me it found nothing, but the 3 others told me it can't proceed unless the "volume is dismounted first", i didn't do that cuz it sounds scary, and i'm running the command on C:, they also asked me to schedule the scan for the next system restart instead, i answered Y to all 3, will there be 3 scans now or?? Idk (Should i try doing chkdsk but say Y to dismounting the volume??) (Also, does the scan run in the background or? cuz i noticed nothing when it restarted)
• I tried running sfc /scannow, it reached 100% really quick, and then told me "Windows Resource Protection could not perform the requested operation"
• I tried running Dism /Online /Cleanup-Image /ScanHealth but it told me it doesn't "support servicing Windows PE with the /Online option", i removed the "/Online" but then it told me "cleanup-image option is unknown"
• I also tried redoing Dism /Online /Cleanup-Image but with /CheckHealth and /RestoreHealth instead, but the same first error message
• I tried booting into safe mode, and also just booting normally but with driver signature enforcement or smth disabled, but both of those gave the same bluescreen
• I tried running "chkdsk C: /r" this time, it seemingly worked did some stuff, it took about an hour to finish, but in the end it didn't do anything.
• I tried doing "startup repair", it did stuff for like ~3 minutes (it said it may take over an hour), then rebooted, but still bluescreens
• I did a chkdsk on X: and there were problems found, however since it is read-only no repairs could be performed

Please give me any ideas for why this is happening or how it could be fixed, please and thank you!!