Whenever I try to go into Fastboot/Bootloader by Power + Volume Down it doesn't work, the Fastboot screen pops up for a few miliseconds then it reboots, if I just hold Volume Down it'll keep bootlooting into Fastboot and crashing, when trying adb reboot bootloader it doesn't work either, so I can't lock bootloader.Already tried re-flashing with QFIL and TWRP.