Jews have for centuries claimed the suffering servant of Isaiah 53 was the nation of Israel and not a single man who was Christ. It is creative but untrue. It is a lie actually. There are some ways to prove it isn't the nation. The passage divulges several traits that couldn't be the nation.
The character was undesired. Israel was very much desired and considered beautiful by surrounding nations and their leaders. Solomon built the nation so that thousands of foreign wives desired him. The queen of the south praised his works, and the wisdom of organization spread into surrounding countries. It is untenable to say the kingdom was not desired.
The pronouns "us and we" in the chapter speak of the nation, someone is dying for their transgressions and sins. They proclaim our sins were laid upon him. The sinners were the nation, the servant was the savior who died for them.
So it isn't really a good claim to say the servant is the nation, other passages such as Acts 8 and the Ethiopian eunuch show the question in the early part of christianity was about a person "Who is this speaking of in an individual sense. The eunuch surely asked the same question the rabbis in Jerusalem asked. At the time asking if it could be the nation wasn't in the conversation. Phillip explained it was Jesus.
Acts 8:34
And the eunuch answered Philip, and said, I pray thee, of whom speaketh the prophet this? of himself, or of some other man?
The eunuch had just come from Jerusalem and nothing brought him to ask if it was a nation and not a man. Such questions were a later invention of Jewish apologists.