YOU SAID:

hi~! my nickname is TJ, my friend, alex, gave it to me.

INTO JAPANESE

こんにちは〜！私のニックネームはTJです、私の友人、アレックスは私にそれを与えました。

BACK INTO ENGLISH

Hello~! My nickname is TJ, my friend Alex gave it to me.

INTO JAPANESE

こんにちは〜！私のニックネームはTJです、私の友人のアレックスは私にそれを与えました。

BACK INTO ENGLISH

Hello~! My nickname is TJ, my friend Alex gave it to me.