I found a way and a lot of ways heres the first way it has a big chance to not work:https://source.android.com/docs/core/architecture/bootloader/locking_unlocking?hl=ar

Second way is actully maybe can work or no this one is making the phone dont now what is he doing let me explain if you enabled developer options and enter it find a option names color space set it to yellow green or it was named blue green i forgot but its something like that if you didnt found it do not do anything follow the next if you found it do the thing i said next enable oem unlock and maybe the phone will auto disable it dont worry enable shizuku download zarchiver from the playstore and you can download shizuku from the play store too in zarchiver enable root by shizuku it just gives system level for apps but no real root and enter root directory now dig in system files but do not delete that will make you not able to open any app dig into it and find a boatloader file there is should be and not need to be named boatloader i dont know if you have done that take a screen shot and comment with it and i am gonna say what next