How to flash TWRP using cmd

FAILED (remote: 'This partition doesn't exist')

need unlockbootloader?

Sending 'recovery' (32820 KB) OKAY [ 0.735s]
Writing 'recovery' (bootloader) Invalid partition name recovery
FAILED (remote: '')
fastboot: error: Command failed

motorola moto x4
i can boot the twrp but cant flash

U really made a genuine video

thnx yaar

Can't flash unsigned image solution

I'm not being racist as I have observed other cultures in a diverse scale and I ask, why on most every intro your hindi race makes, causes my ears to pain so much, and then for the remainder of the video you talk so softly, now that you my damaged ear drums to hear less you insult me further by talking in vary low volume, can you please turn down the VOLUME of your intros to match somewhat closer to your speaking voice, can you have mercy on our ears will ya. please.🙏🏻 and I would be vary grateful with thanks if you would. 👍🏻

Bro command failed is showing

You didn't say/show exactly how to open a command window from the file ???

Thank you so much bro.

Bro my also coming PowerShell