I want to move to Germany. My German is not very good. I tried Duolingo, but I find it difficult to speak the language. I found Justlearn on Google, but I am not sure, how it works. Maybe, you have tried online tutoring.
Hi! I had the same situation when I was living in Asia where I have been working for a couple of years. I have been using Duolingo to learn some basics. Also, I was using https://edubirdie.com/plagiarism-checker to check some of my writings for some grammar issues. You won't be able to learn to speak a language with such sources but learn some grammar rules and enrich your vocabulary. I can suggest you take some speaking courses in your city before you will move to Germany. As far as I know, the German language is not easy, so it will take a lot of time and effort to learn it.