I downloaded twrp , placed my phone into fastboot. Checked if it was connected it sayed "Yes"
Then i told the command prompt to flash my recovery.img , witch command prompt awnsers to.
C:\Users\Daan\Desktop\stock>fastboot flash recovery recovery.img
sending 'recovery' (9948 KB)...
OKAY [ 1.219s]
(bootloader) signature checking...
FAILED (remote: signature verify fail)
finished. total time: 1.855s
you must have an unlocked bootloader to flash recovery