Thank you for knowing that you can not fix everything or everyone.
There is a PM option for sharing in a one one one, but tact is always important. Also a report button if there is a serious issue.
Sometimes it takes people some personal conversations, say politely in a PM, to help someone understand. Sometimes there is no logic or reason to be had and never will be.
We can help as much as possible by sharing advice, and for every post of good advice, many people may read it and you might help THEM, even if you can't help the OP.
We, for the most part are lovers of our little aqua critters, and wouldn't want anything bad to ever happen to them and do our best to communicate that in a caring way.
Sometimes people are raised to think that humane fish (animal) care/keeping doesn't matter and you can just get another at the store, and it takes time or a different way of seeing things to help them understand.
Sometines we can make a difference and sometimes we can't.
Thank you to all who do and try to.