There's a number of problems with your claims.
First, there are no variations in the resurrection accounts in the Gospels. All four agree Jesus was resurrected. The issues you raise (how many angels appeared, etc.) occur
AFTER the resurrection.
Second, those events are not contradictory, they’re complementary. If you put them on a timeline (How many angels were at the tomb? Answer: What time was it when the first one appeared, and then the second?), then most of the alleged contradictions disappear. Then there’s also what Cold Case Detective J. Warner Wallace calls “literary spotlighting.” One skeptic would argue that John’s Gospel only mentions Mary Magdalene at the tomb. That’s who John focused the “spotlight” on initially. But in reality, John was aware of the presence of other women at the tomb because later in the Gospel John wrote, “So she (Mary Magdalene) came running to the Simon and the other disciple, the one Jesus loved, and said, ‘They have taken the Lord out of the tomb and
WE (“We”) don’t know where they have put him.’” – John 20:2
Finally, there's Simon Greenleaf’s “Harmony of the Resurrection Accounts,” which places the resurrection scriptures in chronological order.
Greenleaf’s Harmony of the Resurrection Accounts