Question: I think it is not a good practice to close doors on one's face! My English is not good? It's ok. Tell me that. I'll accept it and I'll make an effort to make it better. I have let an incomplete answer because a bad educated person closed a door on my face!

Answer: 
I've had a dozen or more questions over the years closed half-way through an answer I was writing. Once or twice I even thought the answer I was writing was some of my best work.

It happens - it's a consequence of the fact that 1-5 people voted to close the question before I could finish. It's not an insult to me - they don't (and can't) know that I'm trying to pound out an answer. It's just the way a self-moderated site works.

Welcome to the club. We meet on Thursdays.
Let's keep in mind that only around [7% of closed questions get reopened](https://worldbuilding.meta.stackexchange.com/questions/9609/2021-a-year-in-moderation), it is always safer to never be the first to answer, wait a few hours and see how it goes, just to save your own time and mental sanity.

Alternativelly, re ask the question yourself and answer it yourself.
There are internet websites and applications that allow you to go back in time and recover all your lost material, but generelly just going back to the previous page will save all that you have written.

Like now, if I send this post then press ''back page'' button, it will automatically bring me to the edit section.

Another stragegy is to not write the answer directly on this website, write it somewhere else then copy paste it, I juggest visual studio because it is black screened and it counts your lines, it also saves the file even if your computer crashes without you saving it.