I need to improve my English

Hello, my name is Tanara and I need to improve my English in order to obtain a IETS grade. My target objective is to immigrate to Canada, Australia or New Zealand. I am a Brazilian, living in a chaotic country that is in a recession. I am a very skilled worker, but this does not garantee a job in Brazil. Unfortunately I need to search for new opportunies outside of this country. I did not have the opportunity to learn English when I was a kid or teenager, in fact,(this could probably be written differently) I had a very poor language class at school. During my graduation I had the opportunity to start  English classes, but did not have the time or money to invest on  in this them. After, Later, when I was doing my Master degree i I started to talk with person people online and started to have take regular classes to improve my conversation and writing. The I improved my reading I improved with lots of technical articles and the by listening with to movies and tv series without subtitles or subtitles in English. After that I had the opportunity to have a fellowship with an American university and had the opportunity to speak, listen and writing write in English, but not enough to have fluency. I tried to write this text with no Google translate help.