The great tribulation was part of the destruction of Jerusalem. 1.1 million people died and many resorted to cannibalism due to the Roman siege.
Jesus didn't say there was a resurrection at the beginning of the tribulation.
The generation has passed and those in the generation he was addressing, if they were Christian and listened to his advice and recognized the signs, escaped before the tribulation.
If you pay attention to the words, you'll note that he said everything, including his "coming on the clouds" (a sign he says, not literal return of him in person) was to take place before that generation passed.
I am paying attention to the text but I am not convinced you are. To pay attention to the text actually also involves paying attention to the context it is said in. This generation shall not pass is said within end of this age events context, and not within first century events context instead.
Matthew 24:15 When ye therefore shall see the abomination of desolation, spoken of by Daniel the prophet, stand in the holy place, (whoso readeth, let him understand: )
16 Then let them which be in Judaea flee into the mountains:
17 Let him which is on the housetop not come down to take any thing out of his house:
18 Neither let him which is in the field return back to take his clothes.
19 And woe unto them that are with child, and to them that give suck in those days!
20 But pray ye that your flight be not in the winter, neither on the sabbath day:
21 For then shall be great tribulation, such as was not since the beginning of the world to this time, no, nor ever shall be.
22 And except those days should be shortened, there should no flesh be saved: but for the elect's sake those days shall be shortened.
23 Then if any man shall say unto you, Lo, here is Christ, or there; believe it not.
24 For there shall arise false Christs, and false prophets, and shall shew great signs and wonders; insomuch that, if it were possible, they shall deceive the very elect.
25 Behold, I have told you before.
26 Wherefore if they shall say unto you, Behold, he is in the desert; go not forth: behold, he is in the secret chambers; believe it not.
27 For as the lightning cometh out of the east, and shineth even unto the west; so shall also the coming of the Son of man be.
There is no coming of Christ in any sense during the tribulation of those days, meaning verses 15-26. Verses 23-27 prove it.
Matthew 24:29
Immediately after the tribulation of those days shall the sun be darkened, and the moon shall not give her light, and the stars shall fall from heaven, and the powers of the heavens shall be shaken:
30 And then shall appear the sign of the Son of man in heaven: and then shall all the tribes of the earth mourn,
and they shall see the Son of man coming in the clouds of heaven with power and great glory.
But there is a coming of Christ here in verse 30, and according to verse 29 this coming is AFTER the tribulation of those days, meaning AFTER the time of verses 15-26.
Matthew 24:33 So likewise ye, when ye shall see all these things, know that it is near, even at the doors.
34 Verily I say unto you, This generation shall not pass, till all these things be fulfilled.
35 Heaven and earth shall pass away, but my words shall not pass away.
36 But of that day and hour knoweth no man, no, not the angels of heaven, but my Father only.
37 But as the days of Noe were, so shall also the coming of the Son of man be.
This coming in verse 37 is obviously meaning this same coming in verse 30, therefore making the context of verses 33-37 to be meaning after the tribulation of those days, meaning after the time of verses 15-26.
And since one can't logically apply the coming mentioned in verse 30 and 37, to that of the time of verses 15-26, what other coming could this possibly be referring to if not Christ's coming at the end of this age?