Sasuke had a harem of girls after him, the praise of all the adults and teachers of the academy and sympathy of all the villagers after what had happened to him and his clan.
Naruto wasn't just alone, he was hated and despised by everyone since the day he was born for things that he never did and reasons he never eve knew about
Don't you dare even try to say that Sasuke was more alone than Naruto, if he made even 1% of the effort Naruto did to make friends, he'd have them.