I just skimmed this long string and am so happy to see you not only got a uke but are also progressing quite well, it seems.
And you're also noticing things like the "feel" or the "soul" of a piece--how one person playing can seem so blah, but another can make it come alive.
Music is a language, a means of self-expression. And like a language, you can read, write, speak/play, and listen. You're gradually incorporating all of those facets in.
And I love imagining your geese mesmerized, listening to you. Glad they liked it!
I've discovered it helps to start on a lower quality or "student" instrument at first, because of cost. Once you've stuck with one for a while and can afford it, you can upgrade to a professional quality instrument.
Have you considered asking at your local music store if they have any referrals to other players in your area? That might be a way to get some questions answered, but it might also be an avenue for you to try and maybe buy another instrument.
Musicians tend to have multiple instruments, and we often have something we no longer want and may be willing to part with it to someone serious, who will respect the instrument, rather than sell it blindly, since someone might just treat it disrespectfully.
Instruments have souls, after all...
When we do African dancing, we must pay respects to each of the drummers and their drums when we are finished. As a musician, I truly feel that respect, knowing firsthand how much time, money, energy, and hard work goes into playing an instrument before one gets to the point where it sounds good enough to be played in public, or as a performer or professional.
But in your case, where you're doing this for enjoyment and expression, you are listening more than you realize, because you're already changing things to what seems to sound better in your heart and ears. This is part of the progression.
And isn't it amazing? Like a sort of magic.
For inspiration, here is Jake Shimabukuro. One reason I enjoy his playing is he so thoroughly enjoys it. He's been playing since he was 3, by the way.
Keep up the fantastic work! If you get brave enough, I'd encourage you to video yourself playing a song from start to finish...or as much as you can, at various points along the way. It will give you an outside look that can often point things out for you to improve, correct, or continue. AND it's a fabulous way to document your progress.