Thanks ^^ Agree. I really do not like Google translate

Btw, for translating phrases such as "por mi cuenta", I find that Linguee is a better source than Google Translate because they find multiple examples of usage: por ejemplo: https://www.linguee.com/spanish-english/translation/por+mi+cuenta.html

That is what I would say. You could also say "soy autodidacta." It might be a good idea to ask in the Spanish forum though. Native speakers can often add a bit of additional context regarding common usage and alternate ways of saying things. Que tengas suerte en tus estudios!