Hi, John.
I am a picker (lol) but it's really only because most of the material I play requires it (hi gain thrashy stuff to rhythm acoustic that needs to keep a "brush" beat). However I learned "hybrid" picking (pick between forefinger and thumb + using the middle and ring finger to pluck higher notes) early on and when I need the extra versatility that's generally what I fall back on (I actually used that for the intro of that last BBZ song we did). As cheesy and cliched as it is to say this I picked (nopunlol) up that style from learning Stairway to Heaven about six months into the only official lessons I ever took (I only got one year before dear ole dad cheaped out on the lessons). I actually wanted to go full on with classical training but it was not in the cards.
THAT said there are a LOT of different approaches to fingerpicking but to start with here are some fundamentals of "proper" that are tried and true and should get anyone where they need to go if they practice enough...
Learn the PIMA system and seek out materials that utilize it to teach proper form...
https://www.guitarlessonworld.com/lessons/fingerpicking-technique/ hrrm... a brief skim of that and it looks like it covers some other useful stuff too but whatever...
The other thing is learning "Apoyando" vs. "Tirando". Here's a weird descriptive article about it...
https://onlineguitaracademy.net/articles/flamenco-guitar-technique/apoyando-and-tirando-two-main-strokes.html BUT my general understanding of it it all is (since I studied this yeeears ago so I may be wrong/oversimplifying)
Apoyando = Your fingers pointing straight down toward the face of the instrument (like a tradition bass player would) so you can do scale runs and little "flourishes". Usually it's a back/forth (index and middle finger or I and P in the PIMA system) which is tricky but you can replace "plastic" picked parts by flicking your middle finger (or index) back and forth on a single string as you fret the notes/run (which requires some careful left hand string muting and precision attack on the string being fretted to play cleanly). That latter style/variant is the type of thing you see/hear Flamenco guys/gals doing whereas in classical guit it's more of that "walking" I + M bass style attack for runs.
That Flamenco style flickering of the M and/or I is also great for hammering down on chords. In that case you want to slam the top of the figernail down to focus on the note most important to the chord you are playing or what will best represent the chor. For example you may want to strike the bass note first then let the nail chomp down into one or more strings underneath it or you may want the whole chord to sound evenly so you'd focus on the "middle" string(s) of the chord whilst still raking across the strings above or below the "middle" (so if it's a simple three string triad would focus your attack on the middle string or for a six string chord you would focus your attack on the middle two strings and so on... lots of judgement calls that need to be made on the fly in all this).
Tirando = What I refer to as "Crab Hand". The picking hand is flat against the instrument and the fingers are bent (and ready too pluck). You only pluck one string at a time generally using your thumb to hit "bass" notes and adding melody/ornamentation/chord qualities with your I M A fingers. This is of course the style that takes supreme advantage of the tonal versatility of the guitar but also lacks the attack of other styles. It's the style that makes translating classical compositions to a single guitar possible (the 6 string guit isn't nearly as old as a lot of the classical music played on it). This style (versus Apoyando) also allows for quick right hand palm muting (please note if you are a lefty just reverse my right hand/left hand silliness).
Learning these two styles to a minimal degree of efficiency/accuracy by practicing scales, arpeggios and I to the V (or III) bass note progressions with upper register chord notes played over top said progression will get you a general idea of what can and needs to be done to master those styles.
At the end of the day though, just like all musical theories and methods, it is up to the musician to "lock" into what is actually going on and why it sounds good (and why sometimes it doesn't sound good). This crap can be WAAAAAY overthought.
Personally lately I've pulled out my acoustic again (after ensuring my neighbors are cool with it) and have been experimenting quite a bit... as I always did. However I recently did a massive stint boning up on my bass skills sans a pick (even the what I'm working on is using a pick it was still extremely useful to figure out how I wanted the bass to pop with the drums). Anyway one of the bassists I was trying to wrap my head around was John Entwhistle. I know a crapton of Who stuff as it is and had the privilege to play extensively with a master of his style... plus Entwhistle kicked arse. My point is, and YMMV, my time mucking about with some of those old Entwhistle finger picking tricks has seemed to have translated VERY nicely to my acoustic mayhem. Look up some old vids and watch his picking hand. He does crazy runs and WAILS on chords just twiddling his middle finger. Doing that on bass for a while and just goofing around with other stuff really strengthened my right hand so when I started riffing on a guit with those techniques in mind it just seemed natural.
THAT THAT THAT said... again I will remind anyone and everyone that you need to do what works for you and your musical ambitions. I reject the notion that pick style is inferior or superior to fingerpicking. I also reject that one needs to become an automaton in specific theories or techniques to be a valid player. Quite the opposite actually especially when it comes to guitar. The guitar is one of the most tonally versatile and personal instruments ever invented. Learing technique and theory is great and can open a lot of doors creatively but I personally would never limit myself to any one style or technique.
Then again I also consider a lot of what I do "stunt" guitar playing. There is sooooooo much more that can be squeezed out of our axe boxes than has already been done. I know mine ain't done giving up secrets and I've been playing for almost 30 years.
Cheers and happy riffin'.