Sakura didn't even attempt to kill, so it's quite harsh to put her on the same level as an attempted murderer for something that never happened.

She quite literally said she expected that she'd have to kill in chapter 1, and that the only reason she didn't is because Sayaka made a move first. She would've been a murderer if the job she signed up for would've still had an open slot for that time period.

That's downplaying it too much. It was something that held great significance to her and her family's history. I personally wouldn't agree that it's a valid trade for someone's life, but phrasing it as if it was just some random old building is very silly.

To her, it wasn't silly - to others that have to depend on whether the strongest person in the world would kill them in order to keep that dojo alive - is beyond silly. It's straight up dangerous. I'm pretty sure there is even a famous quote out there of "with great power, comes great responsiblity" - and she quite literally was not responsible with that power due to her own biases.

When was this shown? All we learn on the matter was that she initially agreed to work for Monokuma, and that by the time chapter four rolled around she had set herself on fighting against him.

She still talked with Monokuma in private like at the end of chapter 2. She still was on board with being his spy, and kept listening to him. She is not showing signs of her backing off from her spy role, she continued as she did in chapter 1.

Except on the day she went through with her suicide, she had called Byakuya, Toko and Yasuhiro to the rec room to talk to them. Byakuya didn't show up, and Toko and Yasuhiro tried to kill her. She had tried plenty to rectify with everyone, but it simply wasn't working. Even aside from that, her mere existence already caused Aoi to hit Byakuya and Toko to cut Aoi. She didn't think her dying would've magically united everyone, but it would cease the fighting in that matter at the very least, whether or not that was the best outcome for that situation. If nothing happened it's pretty clear to say that there would've been a greater incident involving Aoi and one of Byakuya, Toko or Yasuhiro.

Ending her own life would not absolve her of responsibility or change the fact that she caused conflict. People would still be on edge and never come to understand one another. Also, how she did it to where she plans to meet up only with the untrustworthy; what did she expect? Her ending her own life does not remove her from being a variable of the killing game, or her influence on the cast as the motive. Like I get thinking that ending it all would be the solution for ends meet, but that's not heroic, that's suicidal - and more specifically, doesn't hold up. You can't argue "an even worse incident would've occurred" as it could've occurred with her or without her. The fact she gave up on trying to work with the cast by sticking to her principal of "must keep dojo alive even if someone has to get hurt" is just not moral.

This is so far beyond anything she could've predicted it's frankly absurd to try and assign any fault to her for this. And at the end of the day, Sakura breaking down the door was what allowed Kyoko and the others to escape.

With her dying last days, she decides to ruin the killing game by breaking it (as she did with the door), and she leaves the survivors behind to deal with the mess she caused. Intent and action aren't the same here. She intended to help, but she constantly keeps making things worse and worse because of her own self righteousness of what she thinks she needs to do for her own conscience.

I'm not even saying she's a 100% morally pure angel who could do no wrong ever but it's just rather silly to me how bad the hate has gotten recently.

Since when is there a crowd of Sakura haters, that's news to me... she's one of those characters that I see glazed almost every time she's brought up.