Really? Can you tell us of another world that THEN WAS, which was totally destroyed in the flood
Yes.
God told Noah that He was going to "Destroy" the first world.
I do not see anything in that verse that states that this is the first world. I’m not sure how you determined that.
Genesis 6:7 shows the reasoning for the need for the flood.
Genesis 6:7 And the LORD said,
I will destroy man whom I have created from the face of the earth; both man, and beast, and the creeping thing, and the fowls of the air; for it repenteth me that I have made them.
Notice that God here is being specific about what he is going to destroy. We see that what he was going to destroy was from the face of the earth. Notice again he states this in
Genesis 7:4 For yet seven days, and I will cause it to rain upon the earth forty days and forty nights; and
every living substance that I have made will I destroy from off the face of the earth.
Notice also he is not referencing only man in particular but all things made from “the face of the earth”.
Look at Genesis 8:21,
Genesis 8:21 And the LORD smelled a sweet savour; and the LORD said in his heart,
I will not again curse the ground any more for man's sake; for the imagination of man's heart
is evil from his youth; neither will I again smite any more every thing living, as I have done.
we see that God has promised not to curse the ground again. We know that God cursed the ground because of Adam Eve in Eden. God obviously wanted to purge the earth of those animals and man made directly from the earth. We can see how this develops from Genesis 2:4 to Genesis 4:26. Also recognize that Cain's offering was from the ground.
Now, let’s take a look at what exited the ark when it landed,
Genesis 8:19 Every beast, every creeping thing, and every fowl,
and whatsoever creepeth upon the earth,
after their kinds, went forth out of the ark.
How about what got on the ark?
Gensis 6: (19-20) 19. And of every living thing of all flesh, two of every
sort shalt thou bring into the ark, to keep
them alive with thee; they shall be male and female. 20. Of fowls
after their kind, and of cattle after their kind, of every creeping thing of the earth after his kind, two of every
sort shall come unto thee, to keep
them alive.
It seems now what was kept on the ark is different than what was left on the ground to die. God here basically makes a distinction about what was too be kept and what was to be destroyed. What was to be destroyed was made from the ground and what was to be kept was “after their kind” (in His likeness) . Like or not they are different and God made distinction clear here in scripture for a reason. What is the difference? Why are they different? We can see the difference of those that are made after their kind in Genesis 1:2 through Genesis 2:3. We see specifically that in Genesis 1: (25-26) that the ones that are to be kept on the ark are made here. and the story about those to be destroyed is told between Genesis 2:4 through Genesis 4:26. Notice how Genesis 5:1 even adds more strength to validate the distinction.
I showed this distinction for a reason. When was those made from the dust created?
Genesis 2:4
These are the generations of the heavens and of the earth when they were created, in the day that the LORD God made the earth and the heavens,
When did this occur? Genesis 1:1
In the beginning God created the heaven and the earth.
What followed directly after this
Genesis 1:2 And the earth was without form, and void; and
darkness was upon the face of the deep. And the Spirit of God moved upon the face of the waters.
The world was flooded.
Why?
Ezekiel 31:15 Thus saith the Lord GOD;
In the day when he went down to the grave I caused a mourning: I covered the deep for him, and I restrained the floods thereof, and the great waters were stayed: and I caused Lebanon to mourn for him, and all the trees of the field fainted for him.
There is much more to add here, however the world that
then was had been flooded by the deep.
Greek-destroyed totally utterly) 
