Well, if you want to blame Naruto's loneliness on someone then you should blame Minato. Of course he is not all to blame, but he was the one to wish that no one, but the adults knew about the incident involving his son. He was also the one to put the Kyubi in his son, all because he thought that Naruto could control it. Pretty selfish and inconsiderate. Of course, like I said before, this is not all Minato's fault as the adults knew what happened, and yet they insisted on acting like children. Hiruzen was even worse about it, as he tried to keep it a secret following Minato's words. He was also a terrible hokage as he did nothing to help Naruto when he was lonely. He didn't try to talk or even tell the villagers to stop when they were out of line. He just made some stupid rule stating that no one could talk about the Kyubi and that Naruto has it sealed within him. That very notion alone just makes everything worse. Of course keeping it a secret would allow Naruto to have friends his own age, but this would also signify if his classmates would be willing to accept him for him, and not turn away like the villagers did, like he was some random beast or something. Even during Tsuande's reign, it seemed like more and more people accepted Naruto for who his is. Tsuande actually supported Naruto and even stood up against the elders when they tried to lock Naruto away. This is why Danzo, Hiruzen and the elders are scum. Truly, the only person who has been mature about the whole situation involving Naruto's childhood loneliness is Kakashi, Jiraiya and the other adults who actually didn't badmouth him like Asuma and Kurenai.
If Minato was alive witnessing the villagers rude and atrocious behavior involving Naruto, I'm pretty sure that he would not be pleased or approve of it. The only thing that upsets me about all of this is that, despite the adults and civilians knowing who Naruto is and who his father is, despite having a Jinchuriki sealed within him, they still act like 3 year old children. It makes me sick. They obviously have or had no respect for the Fourth Hokage and Kushina who actually wished for their son to have a peaceful and endearing life. In my eyes the villagers are selfish scum who doesn't deserve to be forgiven by Naruto.
Konoha as a whole is a trash and disgraceful village, but it's not only the Leaf. The Cloud, which had Bee and the cold heart villagers that detested and despised him as well. Unlike Naruto, Bee didn't give a fck or care about the acknowledgment of the villagers. Gaara also had it bad (way worse than Naruto and Bee). Gaara and his hellish life with the sand. Later on becoming Kazekage and receiving the support of the village and the people. It all comes back to my point with Naruto. The villagers and civilians only respect and praise Gaara now because he got stronger and protected them. All the great nations in general consist of ignorant pieces of filth that only support someone when they themselves are weak and need to be protected. Where I'm from that's called being fake.
Naruto soon started to get closer to people and make friends. Iruka sensei, even if deep down he was iffy of Naruto, knowing that it was the Kyubi to kill his parents. He soon met Kakashi, Sasuke and Sakura, along with his other classmates to fill the void. Naruto might have been lonely, but unlike the other weak villagers, at least there were some people who actually tried to take a chance with Naruto.