Welcome @AdimoraChimex , great idea, however, understand that this is a small niche. You will have to bring out your best course and marketing ideas to make it happen for you. Check out other foreign language teaching courses for some inspiration and enjoy the process.
You can make it in a niche market - even a small one - I certainly have.
The best advice I can give you only teach subjects that you are an expert in and you are totally passionate and love. This is always a great start.
From here enrol in Udemys excellent how-to courses as they will take you step by step through the course creation process.
Good luck and enjoy the journey - keep a sense of childlike fun.
Sharon Ramel Spiritual Guide, Shaman, Priestess of the Blue Rose