Include your ciphertext in the document and explain what makes ROT $13$ unique.

Part $3$:

Using the tools outlined below, determine what type of polyalphabetic encryption scheme is used in the following messages, and then provide the decrypted text:

Message $1$: Bk Bdgab Una Dhznogzbl

Message $2$: Xq ggcetwfm Irtqeex kjmwqnqrg

Message $3$: In ihxyouo jx L ua hwyj ueuno

See decoding tools $-$ All Tools at Dcode.