You're writing a response to a stranger online's thread. You aren't entitled to a response from them.    Espicially if they're posting in anxiety/depression subs try to look at it through there point of view. Heck when im depressed I sometimes ended up leaving messages my friends send me with out replies, so one of my last priorities would be replying to a stranger.    I'm sure you're helping other people with your responses though. Perhaps the person who ignored you just isn't ready to accept that advice and is still in pity party mode. Just know that since you're posting a response publicly it has the potential to help anyone who comes across that thread who feels similarly. Try not to focus too much on the fact that you wrote a reply therefore you are owed a reply because that is just not true.