I wish I have the perfect answer for you, but I don't and I can only go on my own experiences.
Like, I'm a fiercely competitive person, lol. So for me, when I see people's likes or followers and how amazing their skills are, I won't lie, I do get depressed about it, maybe for a few minutes, sometimes a day. Nowadays I don't seem to care as much? But, I always come back to them, wanting to be just as good as them, or better. The important thing for me is that I am continually inspired and motivated by my competitors, my peers, the people I look up to, etc.
What it sounds like to me is that you need to figure out who you are first. Change is scary. Most people are afraid of change. But if you're afraid of change, you're not going to get better. As artists, change is our friend. If we don't change, neither will our art (unless of course, you're totally okay with your art being the same). It sounds like you want to hold on to that feeling that somehow made you feel more genuine as an artist. And that's fine. But to me, it sounds like it's what stopping you.
For example, that may mean you'll have to learn how to let go of the idea you originally did draw for the fun of it. It easier said than done, I know. But, the way I see it, if doing something for 'fun' is holding you back from your truest potential, then you might as well cut it off. From my experience, when I stopped 'doing it for fun' because I wanted to do something with my skills and I needed a fanbase so I can one day leave my 9-5 job, trust me, a lot of things come into perspective really fast, and I improved a lot faster than my 15+ years of 'doing it for fun.' This is where some people may say: you gotta treat your skills/creations/what you want to do as a business. If you don't, you'll find out very quickly it doesn't work.
In a nutshell, I guess for me, it's always been what was more practical in the long run.
You sound young and are probably still confused so what I'm saying may go over your head right now, but if you can, come back to it in a year, two years, three years, and see if you start to get what I'm saying.
And to answer your question, yes, I don't see why it's not good to get better at drawing to earn your popularity.