Can I select the negative choice in someone's instagram story?
Why would you pick the negative option?
Because he made life bad for me.
You do not have to like everything that someone posts on the internet. There is a good and bad choice for a reason, so you can express your opinion.
I made the right choice.
Whichever option you chose, it's important that you did it for the right reason. If you were fair in your choice and it felt right, then you did the right thing.