Here is what happened when Titus took Jerusalem in 70 ad:
The siege and attack lasted five months.
It was a typical starve-and-crash assault, which the Romans did wherever they attacked.
The attack was local, involving only Judea.
The Romans crashed the gates, burned the city and crucified just about every last Judean.
No other nations got involved, not even Judea’s neighbors.
There were no heavenly signs.
The world and the reign of men did not come to an end.
After they sacked the city, Titus marched away and life went on for everyone.
Titus eventually became Caesar.
Now, compare this little historical moment in 70 ad to the scope and ending described in apocalyptic scripture.
It’s amazing how that strange viewpoint that it all happened in 70 AD picked up speed among the scripturally ignorant.
The siege and attack lasted five months.
But the war lasted 7 years. The Temple was sacked and burnt at the midway point of those 7 years. (cf "the daily sacrifice shall end") During the sacking of the Temple, Titus and his men brought their regimental standards -- Roman regimental standards were idols, to Caesar and other pagan "divinities" -- into the Temple, and sacrificed to them. (cf "Desolating Abomination")
There were no heavenly signs.
Josephus categorically disagrees with you. I'm inclined to trust him; he was there and we weren't.
The world and the reign of men did not come to an end.
But "the world" of Second Temple Judaism certainly did.
As I say, prophecy has multiple fulfillments. None of this means it won't happen again, and on a bigger scale. But something of prophetic significance certainly happened in AD 70. AD 70 wasn't the end of the world, but it was a symbol of it.