Like us, angels are a kind of being created with free will to love and do good, or to reject God’s will through pride and selfishness.
Like us, a percentage of the Angel beings accepted goodness and love in joy and humility, the others made their beauty and power about themselves, about selfishness and unlove.
Just as some of us make the former choice, others the latter choice, each bears the consequence of their choice.
The angels, good, and evil, continue to exist as like us they have been given immoral spirits intended to rejoice in goodness and love forever.
Those angels who chose selfishly and with great pride, against God of goodness and love, chose an existence that is without beauty and goodness and love, and in their rage they also seek to draw us into their wretched existence.
It is so amongst people. How many people, in their pride and power, in their selfishness and love, seek to damage and cause pain and misery to others.
It is the way of all creatures who choose to live in selfishness and hate, whether angels or people