There isn't a single inference in Scripture to support the claim that Jesus is/was God, or that Jesus (or Christ) were/are part of some nonsensical 3=1 "trinity". Even the RCC, the inventors of the pagan "trinity" admit that.
“Our opponents sometimes claim that no belief should be held dogmatically which is not explicitly stated in scripture ... But the Protestant Churches have themselves accepted such dogmas, AS THE TRINITY, for which there is no such precise authority in the Gospels,”
— (Assumption of Mary, Life magazine, Oct 30, 1950, p. 51)
Even the passage you've cited does NOT say that, if properly translated and understood. It should be self-evident that being in the form or image/likeness of another unequivocally means that there are two SEPARATE individuals to compare, just as it should be obvious that God doesn't need to humble Himself nor can God be killed, nor is God obedient to anyone else, etc. And how could anyone (including God Himself) be exalted higher than The Most High God?
Philippians 2:5-11
2:5 Let this mind be in you, which was also in Christ Jesus:
2:6 Who, being in the likeness of God, thought it not correct to be equal with God:
2:7 But made himself of no reputation, and took upon him the form of a servant, and was made into the likeness of men:
2:8 And being found in fashion as a man, he humbled himself, and became obedient unto death, even the death of the cross.
2:9 Wherefore God also hath highly exalted him, and GIVEN him a name which is above every name:
2:10 That at the name of the Saviour every knee should bow, of [things] in heaven, and [things] in Earth, and [things] under the earth;
2:11 And [that] every tongue should confess that Christ Jesus [is] Lord, to the glory of God the Father.
Compare with:
Colossians 1:12-15
1:12 Giving thanks unto the Father, Which hath made us meet to be sharers of the inheritance of the holy people in Light:
1:13 Who hath delivered us from the power of darkness, and hath translated [us] into The Kingdom of His dear Son:
1:14 In whom we have redemption through his blood, [even] the forgiveness of sins:
1:15 Who is the image of the invisible God, the firstborn of every creature:
