It’s just embarrassing.
My wife always asks why I am silent in the USA and talk and tell jokes in Israel —— stupid English mistakes like this is why.
Don’t be too hard on yourself, especially since English is not your mother tongue.
Also, if you are on FR very much you’ll soon see that regulars here frequently criticize one another’s grammer or punctuation, etc. Don’t take it personally. And keep right on posting your replies. You are entitled to your opinion. But don’t be surprised if you get a little flack occasionally.