When God create human, He prepare or predestined them to live in the garden of Eden. God predestined a pretty garden for Adam, Eva and their offspring. As long as their obey Him.
God is love, so He predestined all human to live happy life not to hell.
But God also predestined human to have a free will.
If human chose not to obey or believe in Him, than god predestined this disobey go hell.
So I believe oredestination is not random.
Whosoever believe in Jesus, predestined or chosen by God
Matt 22
11 And when the king came in to see the guests, he saw there a man which had not on a wedding garment:
12 And he saith unto him, Friend, how camest thou in hither not having a wedding garment? And he was speechless.
13 Then said the king to the servants, Bind him hand and foot, and take him away, and cast him into outer darkness, there shall be weeping and gnashing of teeth.
14 For many are called, but few are chosen.
God predestined or chose who go to party/ heaven or not, not base on random. Verse 11 tell the reason why go do chose A not B
God chose people that on wedding garment.
John 3:16 explain god chose people that believe in Jesus.
Whosoever believe will be chose.