Here's extra-biblical evidence for the strange darkness that occurred during the crucifixion:
Documenting A Miracle
The rest of your post is nothing more than unfounded conjecture. It is countered by the multiple, independent, historical Gospels and Epistles of the New Testament.
By the skeptic's common practice of discarding or attempting to marginalize ALL historical references to Jesus, you unwittingly would have people believe in a massive and complicated conspiracy by mostly common, uneducated fishermen, etc., to advance a false narrative about Christ. Let's review who would probably have to be in this unwitting conspiracy and be labeled as liars, charlatans, etc.
1. Most or all of the disciples, including early unbelievers such as James and Thomas. Skeptics would, in effect, be assigning acts of deception to these men in spite of there being no narrative or history of dishonesty on their part.
2. The women at the tomb. First-century testimony of any kind that a resurrection never occurred is absent in history.
3. Luke, the physician and author of his Gospel. He wasn't a disciple. He wrote that he carefully investigated "everything" from the beginning. There's no evidence he just focused on the words and accounts of the apostles alone. What's more, he continues his narrative with the Book of Acts, with additional miracles and people (including Paul, a person initially hostile to Christianity) claiming to have had experiences with Christ. Plus, Paul's companions on the road to Damascus "heard the sound" of Paul's experience with Jesus. So Luke would have to be a liar, fool, or charlatan also.
4. Eusebius and Josephus and others who wrote about Jesus had to be lying, mistaken, or also in on the conspiracy to defraud the populace.
We do know of at least forty-two authors, nine of whom were secular, who mentioned Jesus within 150 years of his death. Scholar Gary Habermas, in his Book "The Case for the Resurrection of Jesus" (p.233), listed the following: 9 authors from the New Testament - Matthew, Mark, Luke, John, Paul, Author of of Hebrews, James, Peter, and Jude. 21 early Christian writers outside the NT - Clement of Rome, Ignatius, Polycarp, Martyrdom of Polycarp, Didache, Barnabus, Shepherd of Hermas, Fragments of Papias, Justin Martyr, Aristides, Athenagoras, Theophious of Antioch, Quadratus, Aristo of Pella, Melito of Sardis, Diognetus, Gospel of Peter, Apocalypse of Peter, and Epistula Apostolorum. 4 heretical writings - Gospel of Thomas, Gospel of Truth, Apocryphon of John, Treatise on Resurrection. And 9 secular non-Christian sources, including Josephus, Tacticus, Pliny the Younger, Phlegon, Lucian, Celcus, Mara Bar-Serapion, Seutonius, and Thallus.
5. We need to add Paul to the conspiracy, since he wrote of the resurrection of Jesus in his epistles, and since he wrote most of the New Testament. According to Luke, Paul had an experience with Jesus on the road to Damascus.
6. Let's also add in all the other eyewitnesses of miracles and/or authors of the New Testament, since they must also be liars, madmen, or charlatans.
I can probably dredge up some more, but the list of people who would have to be liars, charlatans, etc., is now too long (and unsupported by any credible evidence on the part of skeptics) to be believable.