I think you misread what I was saying. I'm not necessarily saying that the writers of the Gospels didn't read/write Greek. They clearly did. I'm saying that the writers were not people close to Jesus. The people close to Jesus a) were very likely not educated in reading/writing their native language much less a second language and b) lived in/near Galilee... not Syria, which is where Luke lived. Luke was allegedly close to Paul. Paul never even met Jesus.
Luke's writings were based on stories of stories of stories of stories of stories of stories of stories and it's already widely believed that the stories written in the gospels were modified from actual events to create various narratives.
If random people who were were ten degrees separated from Jesus ministry were just fabricating fake stories, then explain how they got away with it.
When they were writing, some of the apostles were still alive or their students were still alive. Those people would have been in a position to challenge fake stories that random obscure people made up and circulated throughout the Mediterranean region
By the standards of ancient history, the witness accounts of Jesus live are quite good.
You've provided no evidence the early Christian writings were fake stories made up by random people.
I've provided evidence that the canon were written or dictated by people who either knew Jesus or by authors who interviewed the people who knew Jesus.
This is further corroborated by early church bishops who knew and spoke to students of the original disciples.
Further, the church would have never intentionally named two gospels after obscure, low-ranking Christians, unless it was true. If they wanted to give the gospels authority and visibility they would have named them the Gospel of James or the Gospel of Andrew, rather than identifying the low-ranking Mark and Luke as authors
The fact that there is no alternative first century attestations claiming the canon were fabricated by random people ten degrees separated from Jesus' ministry is quite telling just in itself.