Not everyone enters eternal life (AIONIOS ZOE), few will find it.
Many will enter eternal corrective punishment (AIONIOS KOLASIS), they will go through a destruction of the sinful nature.
All will enter into the Kingdom, only few will reign in this Kingdom. There are the rulers of the Kingdom (those in AIONIOS ZOE) and then there are the subjects of the Kingdom (those in AIONIOS KOLASIS).
1 Corinthians 15:23-25
*Each in his own turn: Christ, the firstfruits; then, when he comes, those who belong to him.
Then the end will come, when he hands over the kingdom to God the Father after he has destroyed all dominion, authority and power. For he must reign until he has put all his enemies under his feet.*
The phrase, “until he has put all his enemies under his feet” is a phrase that means they are in full submission.
Ezekiel 43:7
He said: **"Son of man, this is the place of my throne and the place for the soles of my feet. This is where I will live among the Israelites forever. **The house of Israel will never again defile my holy name—neither they nor their kings—by their prostitution and the lifeless idols of their kings at their high places.
1 Chronicles 28:2
King David rose to his feet and said: "Listen to me, my brothers and my people. I had it in my heart to build a house as a place of rest for the ark of the covenant of the LORD, for the footstool of our God, and I made plans to build it.
Isaiah 66:1
This is what the LORD says:“Heaven is my throne, and the earth is my footstool.”
Deuteronomy 4:39
Acknowledge and take to heart this day that the LORD is God in heaven above and on the earth below. There is no other.
Deuteronomy 10:14
To the LORD your God belong the heavens, even the highest heavens, the earth and everything in it.
2 Kings 19:15
And Hezekiah prayed to the LORD : "O LORD, God of Israel, enthroned between the cherubim, you alone are God over all the kingdoms of the earth. You have made heaven and earth.
1 Chronicles 16:31
Let the heavens rejoice, let the earth be glad; let them say among the nations, “The LORD reigns!”
Acts 17:24
"The God who made the world and everything in it is the Lord of heaven and earth and does not live in temples built by hands.
etc. etc. etc.
There is no contradiction, you just don’t understand the big picture yet.