Unhelpful friendships

I'm not sure if this is correct forum, but I hoped to get some advice concerning friendships, boundaries and wellness.
The bottom line is I feel unappreciated, and I'm resentful. I priorisite my friends and always have, but I barely hear from anyone unless they need something, or they want to talk about themselves. I'm a commodity, not an equal, and I'm recognising my mood dipping massively more often; I'll be triggered, then I'll spiral for days, before I pull myself out of it. I've made different choices to my friends and its isolating; I dont have children or a family of my own. I know i probably expect more than they are able or willing to offer, but no matter how much i adapt my expectations or explain how their behaviour makes me feel, nothing changes which tells me they dont care. I've tried to make new friends (I dont know anyone where I live) but its daunting.
Recently, i visited my 'best friend' and told them I was struggling and that I was unhappy. They ignored me and started talking about themself. So I spent the entire visit listening to them and thinking that this situation proved my point.
I am part of the problem, I need to be part of the solution but I need some advice on how to prompt this.
I dont deserve to feel so down on myself, and I dont want to enter another new year without something changing.