A self-taught developer started the Computer science journey in 2016. My first Programming language was c++ then I learned java just to get a piece of knowledge about java. Later on, I started learning c-sharp because it creates hype in me and seems very interested to learn and implement thing so I carry on c-sharp for 1-2 years and worked as an ASP.NET developer.
Don't put all of your eggs in one basket
It means learn new technologies according to market demand. Now, my pure expertise is React JS and React Native. I love to learn and earn as a freelancer :)