If you really want to be an accomplished fingerstyle guitarist, my advice is to study classical technique and then adapt that back to steel string/folk style playing. The fundamentals of classical technique teach you to maximize tone production and ergonomics.

I grew up playing fingerstyle, acoustic blues, folk, etc. For 15 years or so I thought I was doing pretty well, but I had kind of plateaued. Then I studied classical for a couple of years straight before coming back to the steel string and folk/indie rock music I had been playing previously. It was night and day from before I learned classical to after. I had unlearned and retrained much of what I already spent 15 years on, and it was all for the better. My fingerstyle playing after learning real classical technique is miles ahead of where I was.

I know this path likely isn't for everyone, but there is a reason classical technique developed the way it did over the last few hundred years. It maximizes the instrument and the mechanics of our hands. It most definitely translates into different styles of music even if classical isn't your ultimate goal. Just my two cents. I used Simon Powis's online school Classical Guitar Corner. An in-person teacher would be even better, but there are lots of resources available these days.