Bearing sins

[rosends]

You have a few things to discuss here. The first is your reliance on translation but that, I guess, can't be helped. The second is your not understanding who is speaking and about what in most of Isaiah 53. The idea that the nation of Israel suffered is borne out by who is speaking -- foreign kings (through much of, but not all of 53) and their assessment of how the nation has suffered the punishments without having done the sins -- the sins were done by the foreign nations and Israel paid the penalty.

Next, you have to include other verses that say explicitly that the nation is suffering the punishment that should have been visited on others (verse 8, "For he was cut off from the land of the living
Through the sin of my people, who deserved the punishment"). It says nothing about what will happen to those other nations after their debt-punishment is paid off by the nation of Israel. But because this is understood to refer to a future, messianic age, according to some, those nations will realize their error and either be destroyed or repent.

I'm not sure what, exactly, you are attempting to claim. Verse 11 uses the s-b-l root to mean "bears" https://www.sefaria.org/Isaiah.53.11?lan...n&lang2=en
as does verse 4. Verse 12 uses the n-s-a root
https://www.sefaria.org/Isaiah.53.12?lan...n&lang2=en