I want to design a project for myself to improve my social interactions with just anyone, and feel at comfort during most social situations

I've followed this sub for over a year and read the recommended books and everything. But I feel I've never had any real advice on how to progress through situations where one needs to create a deep and lasting conversation/relationship in a structured and planned out manner. P.S. What I mean by lasting relationship does not definitely mean getting into a relationship. But unfortunately most interactions give me this nihilistic sense of being and it's daunting that so many of my conversations are so poor. This is what I would call social hell. I had the idea that the clubs that I was going out to and the people that visited them were the problem, but after some introspection I was seeing that my interactions definitely have more room for improvement such that I would make things more interesting and comforting. So I'm going to try set a project with a constrained macro goal of getting out of the social hell, and a weekly micro goal of seeing minor fixes to my character and gradually get to an ideal social behavior. Now, I'm hoping that the project has a long term effect on me, such that I don't end up back to where I started from when I finish the project I'm setting.

I'd just very much appreciate it if you perhaps have a skeleton for how I should structure and design my own project or perhaps suggest a full project designed by some self help guru or PUA which I might be missing out on. (something in more detail than what is covered in models for example)

TLDR; recommend projects or how i should design a project on approaching and developing lasting relationships ( not only for picking up women )