I'm sorry that you've been experiencing this. The aftermath is dually devastating- having to deal with living through what was already deemed unendurable, and the radiating aftershocks of a failed attempt- I understand. I've been grappling similarly myself as of late. I think it's probably helpful to focus on yourself, at least in the short term- taking care of base physical needs, but also trying to be gentle with yourself, as you would with a friend or loved one that was going through something as difficult as this. The social isolation is painful, I know. I empathize. But if they've already been so hurtful to you- then I don't think it's unreasonable to choose to centre yourself in the immediacy, to help stabilize things until you are somewhat more functional, have had a moment to collect your thoughts and meaningfully make plans on how to move forwards. It's like how going to sleep usually gives you some clarity, even if it doesn't necessarily fix the problem, you know?
Were you expecting to be lavished with love and appreciation?
You usually don't go through with something like this without either failing to think once of the effect it has on others, or thinking about it and consciously ignoring it.
Why care for someone who showed they don't really care about what you think or what their actions do to you? Start by answering this before you try to approach anyone.
I think it's understandable that people in one's life would have a variety of reactions to finding out about a loved one making an attempt on their life. And unfortunately, you're right- often, the reaction can be harsh, critical- people often distance themselves, react with visceral disgust or anger, guilting the surviving party about 'not thinking about them.'
However, I think it's fair to say that most people who are driven to the brink are in sufficient pain that it might cloud their judgement- or, they might have convinced themselves that ultimately, in the long term, that it's for the better of those in their life. I know that when I've been in a very dark place, that I convinced myself even if my brother would be upset in the short term, that eventually, he would be better off without the burden and imposition I place on him, and it would make room for better, more worthy people to come into his life- that it would be a gift, to relieve him of the drudgery of dealing with a deeply mentally ill and unstable person. Of course, that isn't true. It would break his heart. It would devastate him in a way that would still hurt, years on, as he's endured similar loss and still aches over. He's expressed as much. But it's incredibly easy for a depressed person with little self worth to deeply persuade themselves of similar sentiments.
I don't think that everyone goes into facing down their own mortality out of callous spite, or indifference. I think a lot of people just can't bear being in such excruciating pain, anymore. And I think that there should be, ideally, some measure of empathy for that- especially from their loved ones. I know that I've held the same for people in my life. You love them, care for them- they mean something to you, you want them to still be in your life, alive. I think that its reasonable to hold compassion for the sort of agony a person must be undergoing if they think that death is their only way out of such intense, prolonged suffering- that it becomes a little more understandable, when framed in such a way.
Not all of the people in my life have been able to be as compassionate as that, but a very select few have- who love me, who have loved me through all of the messiness of struggling to grow up, cope- live. The people who have been there for me have done so because they understand it wasn't something meant in a malicious, or personally targeted way- it wasn't meant as a punishment. It was because I've been in so much pain, for so long- that it almost makes sense in a terrible, defeated way. That they aren't surprised, it'd been a long time incoming.
Of course, it's unreasonable to think that everyone would think that way- very few people do. But I don't think it's unreasonable to want the people in our lives to, if they cannot be kind, to at least not be cruel, in the wake of an attempt. That doesn't necessarily mean that they will be, or that we get what we want- but being compassionate to a loved one in pain, even if they've done something hurtful, isn't in of itself outlandish. People and relationships are complex.
. ..... I idk it is kinda comforting accepting that I'm alone and all by myself and I'm starting to like it. 
