YOU SAID:

One of my friends and my dad and my friends and my parents and my dad are eating at my parents

INTO JAPANESE

私の友人の一人と私の父と私の友人と私の両親と私の父は私の両親で食事をしています

BACK INTO ENGLISH

One of my friends, my dad, my friend, my parents and my dad are eating with my parents

INTO JAPANESE

私の友人の一人、私の父、私の友人、私の両親、そして私の父は私の両親と一緒に食事をしています

BACK INTO ENGLISH

One of my friends, my dad, my friend, my parents, and my dad are eating with my parents

INTO JAPANESE

私の友人の一人、私の父、私の友人、私の両親、そして私の父は私の両親と一緒に食事をしています

BACK INTO ENGLISH

One of my friends, my dad, my friend, my parents, and my dad are eating with my parents