They sought to make Jesus king for a free lunch. They did not actually offer him any kingdom. That is not the same as when the disciples asked Jesus for signs of when He will be revealed as king and enter into His Kingdom. (The greek word coming in the disciples question, what are the signs of your coming, is a word used for a king's official visit.) They were asking when Jesus would be revealed to be the King, and in Acts 1 they asked Jesus if He would now restore the Kingdom to Israel. He didn't say no. He didn't say there would be no kingdom in Israel. He said it wasn't for them to know the times and epochs established by the Father. In other words, the kingdom being restored to Israel is one of those times/epochs established by the Father.Your notion of kingdom is the Jewish notion, a physical earthly kingdom, it is not the Kingdom Jesus offered.
Jesus refused the earthly kingdom which the Jews sought and offered him (Jn 6:15).
The temporal Messianic kingdom will be part of this world, will end with the final defeat of Satan, after which the first Earth, and all the firsts will pass away, and there will be a new heavens, and a new Earth, and the eternal Kingdom comes to the New Heavens and New Earth. The eternal temple will come down, and God will dwell among all men, and all men will be His people. (Revelation 21.)The temporal Messianic kingdom is not of this world (Jn 18:36), it is of the spiritual world (Mt 3:2), an invisible kingdom (Lk 17:20), within men (Lk 17:21), set up in their hearts and consciences (Ro 4:17).
You should consider Zechariah. There is a lot more to eschatology. Zechariah's name means "Yahweh Remembers". This is actually in line with what Zechariah is about in that God remembers His people, and has not forgotten them. His Fathere name Berechiah means "Yahweh Blesses", because there are blessings in Zechariah's prophecies for the future Israel. His grandfather's name Iddo means "In Its Time". It is going to come. I have started a study on Zechariah, and it is DEEP. To start, I'm using a word for word exegetical study from John MacArthur. It's a very long commentary for 14 chapters of Zechariah. Chapter 1 took 60 pages. I am learning why so many people say the Old Testament is dead, and the New Testament is all there is. It's because they don't like what the Old Testament has to say about Israel.The whole world is not the Kingdom of God until the new heaven and new earth, the home of righteousness (2 Pe 3:13).
The kingdom of God is now (Mt 12:28, Lk 11:20), within the hearts where he reigns and rules.
To give an example, one person said if I believe in the Old Testament, then I'm Jewish. This is after telling him exactly what I am. He said it doesn't matter, my beliefs make me Jewish. His hatred of the Jews/Israel was rather palpable. And I have had plenty of similar experiences besides that one.