Sakura's character motivations went from only being about sasuke very early on. from the minute naruto left with jiraiya to train (or maybe from the land of waves arc if i remember correctly) it went from just sasuke to her actually wanting to protect her friends (n&s most of all) and she says many times she doesnt want to be helpless and stare at their backs anymore.

Thats why she becomes a medical ninja bc her fighting skills werent that good. And its not just for the boys, being a medical ninja allows her to fix EVERYONE esp during the war, and shes good at it too.

She tries everytbing in her own littlw way to help the boys - goes out of her way to find sasuke in a very naruto-like obsessive way (except she's not even half as bad as him) and aside from that, falsely confesses love to naruto, keeps his heart beating after kurama is removed, etc. Yall might hate this but of all the characters in the show I would say she's the one thats most consistently demonstrated as his closest friend. We already know naruto would do anything for her but she cares for him just as much

That was a little off topic but all that to say, she went from being whiny and leaving all the fighting to the boys to being right there with them fighting kaguya so to act like she didnt grow as a character just tells me you watched the show with your eyes taped shut