a.k.a. the 90–9–1 principle. Does the Fediverse follow this rule, or are there more creators here as early adopters? Are you a creator, a participator or a lurker?
Just keep commenting, there are so many people here who aren't native English speakers. As long as it's somewhat understandable, it doesn't matter if you make mistakes. You'll get better over time.
The most important thing I learned on reddit is English. And the funny thing is, once you can write in English, you'll also be able to speak much better because you're not constantly looking for words.