Isaiah 53 is about the suffering servant, the Jewish People.
No.
Read Isaiah 52; 13,14. This is the introduction to Isaiah 53
"Time was when many were aghast at you, my people; so now many nations recoil; at sight of him, and kings curl their lips in disgust. For they see what they had never been told and things unheard before fill their thoughts."
He a clear distinction is made between the Jewish people, my people (plural), and him (singular), the suffering servant whose description follows in 53.
Let's go to the source, Prophet Isaiah:
But you, Israel, My servant, Jacob, whom I have chosen, the offspring of Abraham, My friend; you whom I took from the ends of the earth, and called from its farthest corners, saying to you, “You are My servant, I have chosen you and not cast you off.” -- Isaiah 41: 8,9
But now hear, O Jacob My servant, Israel whom I have chosen! -- Isaiah 44: 1
Remember these things, O Jacob, and Israel, for you are My servant; I formed you; you are My servant; O Israel, you will not be forgotten by Me. -- Isaiah 44: 21
For the sake of My servant Jacob, and Israel my chosen, I called you by your name, I name you, though you do not know Me. -- Isaiah 45: 4
Go out from Babylon, flee from Chaldea, declare this with a shout of joy, proclaim it, send it out to the end of the earth; say, “The Lord has redeemed His servant Jacob!” -- Isaiah 48: 20
And He said to me, “You are My servant, Israel, in whom I will be glorified.” --Isaiah 49: 3
That Isaiah is talking about a nation and not an individual is confirmed by chapter 53: 8, "for the transgressions of My people [we gentiles] they [i.e., the Jewish People] were stricken."
"You are My witnesses, said the Lord, And My servant whom I have chosen" -- Isaiah 43: 10
"My witnesses" (plural); "My servant" (singular)
All the servant verses in Isaiah are referring to the Jewish People collectively.