Right.
Yahweh calls Himself savior and redeemer.
And who is the Savior and redeemer in the New Testament?
Acts 4:10-12
10 let it be known to all of you and to all the people of Israel, that [h]by the name of Jesus Christ the Nazarene, whom you crucified, whom God raised from the dead—[i]by [j]this name this man stands here before you in good health.
11 [k]He is the stone which was rejected by you, the builders, but which became the chief corner stone.
12 And there is salvation in no one else, for there is no other name under heaven that has been given among men by which we must be saved.”
Luke 2:11
11 For today in the city of David there has been born for you a Savior, who is [a]Christ the Lord.
Yahweh is God the Savior.
Jesus is God the Savior.
If Yahweh is the NAME of God...
then Jesus is also Yahweh.
Yahweh = God
You said you can see Jesus in Isaiah 53.
Jesus, as a TYPE, is seen in many places in the Old Testament.
1 Corinthians 15:45
45 So also it is written, “The first man, Adam, became a living soul.” The last Adam became a life-giving spirit.
Moses looked forward to Jesus:
Hebrews 11:26
23 By faith Moses, when he was born, was hidden for three months by his parents, because they saw he was a beautiful child, and they were not afraid of the king’s edict.
24 By faith Moses, when he had grown up, refused to be called the son of Pharaoh’s daughter,
25 choosing rather to be mistreated with the people of God than to enjoy the passing pleasures of sin,
26 regarding the reproach of [q]Christ greater riches than the treasures of Egypt; for he was looking to the reward.
Jesus is the Passover Lamb - Exodus 12
Jesus is the Manna that lasts forever - John 6:35
Jesus must be lifted up as the serpent was - Numbers 21, John 3:14
Jesus is seen in Psalm 22
He is the last of the temple sacrifices.
Jesus is throughout the Old Testament.