Neither of those statements is true.
They’ve found a copy of the book of Acts (Luke part 2) dated to around 60AD.
If Luke was written before Acts, we can accurately predict it was at least in the 50’s AD, then Matthew and Mark written before then, with Mark considered the earliest, which could have been in the 30’s AD or 40’s. Christ was crucified between 28 AD and 33 AD.
This means the majority of the Gospels were written when St Peter, who was Christ’s closest disciple, was still alive and the authors were almost definitely alive.
St Paul was alive when Christ was crucified and he’s an author within the New Testament.
On your latter point, scholars who are maximalist (which means they believe the story to be accurate in terms of claims of divinity and crucifixion), are now in the majority because they’ve found a Roman letter describing Christians as followers of a man called Jesus, crucified for blasphemy.