I understand what you mean, for people like us, whose first language isn't English it can be a huge challenge to be good at it, English is like my third language or maybe fourth, I learnt my mother tongue then two official languages before learning English.
If you are shy about joining a group online or offline I can share with you how my English improved. When I was about 10, my English was very bad, my dad helped me. Everyday he would ask me to copy English passages in a notebook (my spellings were especially bad) and read them to him, it felt pointless at first but slowly I started paying more attention to it and my vocabulary improved vastly, next he would ask me to do puzzles like anagrams and later he told me to write important emails to his clients (he proof read them before sending) this pushed me to take the issue more seriously since I was a kid back then and didn't care much about learning new languages, He would also switch to English news and English Commentary for sports matchs, to help me, I know the methods my dad used were to improve my written English, but they helped me in improving my spoken English as well. Like the people who commented before me, you need to surround yourself with more native speakers, which can be done easily online, like watch English shows etc.
It all comes down to you, you need to have more confidence in speaking English, and by confidence I mean not be embarassed about making mistakes and don't let anyone discourage you, you are amazing even if you speak little English since you are already fluent in your mother tongue.
Good luck 