The Olivet discourse prophecies of both events, the destruction of Israel and the parousia. In Matthew it is difficult to sort them out. In Luke it is much easier. Further, the Greek word translated "generation" also means a race or people and thus "this generation" could mean this race or people referring to either the Jews or the followers of Jesus.
It’s not that hard to sort out in Matthew 24. I suggest a likely division at vv. 34-36. One obvious reason, up to v. 34 Jesus is giving detailed signs regarding the events that would transpire. He was warning His disciples in the first century to flee from Jerusalem to avoid the impending calamity that would come upon the city. The temple was destroyed so that not one stone was left upon another. Folks who disregard that application are force to adopt the utterly nonsensical idea that it is some future temple being spoken of.
From v. 36 on there are no more signs being spoken of. In fact we see just the opposite, We see a world pretty much going along as if nothing was happening (v. 38), and then suddenly He appears. V. 44 sums it all up, “Therefore you also be ready, for the Son of Man is coming at an hour you do not expect.”
Further, the Greek word translated "generation" also means a race or people and thus "this generation" could mean this race or people referring to either the Jews or the followers of Jesus.
But it is never used that way in the gospels in an eschatological sense. It is always referring to the contemporary generation of Jewish people living at the time of Christ. E.g.,
"The men of Nineveh will rise up in the judgment with this generation and condemn it, because they repented at the preaching of Jonah; and indeed a greater than Jonah is here. … Then he goes and takes with him seven other spirits more wicked than himself, and they enter and dwell there; and the last state of that man is worse than the first. So shall it also be with this wicked generation." (Matt. 12:41,46)Just do a word substitution. Do you believe the Jewish people in general constitute a “wicked race”?
There is scant exegetical reasoning to apply it the way you have suggested in Matthew 24.