Stuck on bootloader mode- LG Stylo 4

Recently I turned on developer option to make my phone faster. But then all of sudden my phone got frozen on one screen so i did a soft reset. But once i tried turning it back on it got stuck on my boot screen. I did another soft reset and then all of sudden now I’m stuck on a fastboot reboot for bootloader. I have tried almost everything including a factory reset. I tried what it says by holding the power button for 10 sec and that didn’t even work. I then noticed my power button doesn’t work when trying to shut it down. Please Help. I really need my phone for school to upload my assignments, time management, etc.