Now having been questioned by the Pharisees as to when the kingdom of God was coming, He answered them and said, “The kingdom of God is not coming with signs to be observed;
nor will they say, ‘Look, here it is!’ or, ‘There it is!’ For behold, the kingdom of God is [1] in your midst.”
'In your midst' is not inside of you.
The Kingdom of God is in the future.
Look all around. The world is not a very nice place under human rule.
Under God's rule there will be a totally different environment.
It will happen after Jesus returns in order to set it up and start things running, so to speak.