"I wasn't talking about you" If you use "speaking", it sounds a bit more formal. "I wasn't talking about you" sounds much more natural/colloquial. "I didn't mean you" is almost the same depending on the context. For example: "I hate it when people chew with their mouth open" "But I was chewing with my mouth closed!" "I wasn't talking about you." OR "I didn't mean you." are basically the same in meaning in this situation.

didn't help me. (¡esto es tan dificil!, por dios!!)

Thanks. Google translate does not help me this time.

"No estaba hablando de ti." I think it means " I wasn't speaking about you."