Harry doesn’t know how to function without lots and lots of help and support.
Not his fault to a certain extent, it’s how he was raised.
But he just doesn’t understand the order of things outside BP and the RF.
He was raised to have work done for him, without even knowing said work was being done, or who by, or why, or when, or what for and in what order and at what cost etc.
He still doesn’t know. This is, imho, 90% of why he needs Meghan so much and why he will always defend her and give her whatever she says she needs/wants. She holds the cards in that marriage. If she leaves him, he will crumble. He will have nobody but his children and paid help. So many examples in history, including royal history, of how that ends.
The way he has conducted himself with various non-palace people over the years is just him continuing to be him. He treats everyone as though they’re palace employees, there to do whatever he wants and needs without complaint and in the way he needs it doing (without him even knowing what he needs), when he needs it doing. Journalists. Photographers. Charity employees. Security personnel. Therapists. Producers. Executive producers. Personal employees. Professional employees. Lawyers. Etc etc. He has no inkling these people have jobs, to earn a living, which they can’t jeopardize, and that he’s not their priority and cannot be their priority. He can’t get that into his head. When faced with this reality, he throws a tantrum because it’s more than he can handle and he doesn’t know how to deal with not getting what he wants/needs. He’s a literal prince, behaving like a prince. But outside the kingdom he’s just another pleb, and he doesn’t like it. It’s probably why he seeks refuge in nature and surfing and drugs. Doesn’t have to think about such things.