Yes, I started learning drawing as an adult with zero natural talent. For me, it wasn't about becoming exceptionally good but about exploring and finding pleasure in the process. I took drawing classes following the "Drawing on the Right Side of the Brain" method, which I highly recommend.
Another vote for this book. Took me from objectively terrible at drawing, to objectively mediocre. I think if I'd put more time into practice it could have got me to the point of good. While this doesn't exactly sound like a ringing endorsement, it's literally the only thing that moved the needle for me.
I never made it through the book (I know, bad habit of mine) but she said _one_ thing in that book that opened my eyes; paraphrased "you're not drawing the object; you're drawing lines". The first time I drew a crumpled-up blanket blew my mind.
Since then, I just find techniques[1] and ideas[2] that I implement for fun. The reaction from people is joyous.
Yes. Yet, in my mind, for some peoples and/or subjects (drawing buildings, interiors where perspective is important, etc.), it may be easier to do the exact opposite. Meaning, to learn instead¹ how to construct an accurate perspective view from descriptive geometry, until it becomes second nature and one can then skip the geometric construction (or at least make it less exact and time consuming, closer to what's described in Robertson's "How to Draw" for instance).
¹: I wrote "instead", but of course both ways complement each other.
