To me, the word “persons” can only refer to human beings!
The sexual explanation
Since all spirit beings are sexless …
they cannot actually be masculine "persons", but they must be neuter "it"s.
So, I look on the Triune Godhead as being 3 "Manifestations" of God.
And I look on angels and demons as neuter "it"s, and not masculine spirits.
The reason for the 3 “Persons”
God knows how difficult it would be for us to have a personal relationship with an "It".
So, the Triune God decided to portray "Themselves" as three "Persons"
... just for us ... just so we could relate to Them.
This is just one more demonstration of God’s great love for us.
The First Member ... Father God
The Second member ... the Son of God
The Third Member ... the Holy Spirit
(The Spirit is the humble Work-horse of the Godhead, and does not desire any praise.)
Specifically about “the Son of God”
If He was not made sexually, and if He was not created by God, how did He come into being?
Answer: He always was, He always existed (John 1:1).
But, how could anything that always existed ... be some kind of “Son”?
The "Son of God" is a name-title-term … a term of endearment used throughout the OT.
Gabriel told Mary to call the Baby: Jesus, the Son of the Highest, and the Son of God.
Gabriel never said that He was these things … He was just to be given these names.
It’s all about you and God
Would you feel comfortable trying to have a personal relationship with an "It"?
The NT says you must have a “knowing” relationship with Jesus to be a sheep-elect:
John 10:7-28, John 17:3, with the Holy Spirit dwelling and leading (Romans 8:14, 2 Timothy 2:19).