Many of the people I do have online conversations with speak English as their first language. I kinda get by but you native speakers really underestimate how hard it is to express oneself in a foreign language. Concepts work differently, metaphors don't really translate, references you have used for decades don't make sense.
Like in German I am actually somewhat eloquent and texts I write don't look like a person with a head injury wrote them.
@tante you are going yourself a diservice your English is really good, flows well and is understandable (tbh your writing is better than mine as a first language). That said you are right on the underestimating of writing in a second language. I definitely did a little before I moved to Sweden.