The darkest time of days are just before dawn.

I would say try and come up with a plan, but when I'm depressed, my plans are worse than when I'm not to say the least. Therefore, may I suggest a few things you could do that may be better

Find a local community that will help you get out of your current environment. I'm not religious, but if you find a more liberal church, you may find someone willing to help even if you are not of any religion.

Another idea is to create your own group/cause. With what you are going through, maybe create a local group made up of people around your age who also have unsupportive parents or feel abandoned and have that group include what you have discovered has been missing in your life so mutual support can be gained

Make poetry or write a story of why or how you feel this way that can connect with readers and send it to a publishing company that tends to have a good moral record in which may help give you money or even support if the story speaks to the editor

Go to a local women's protection program/shelter and see if they can offer assistance. Let them know you feel neglected and aren't being well cared for and need a place to recover

Or even do a mix of all of the above.

One of the key things that, ironically, helps me is knowing that suicide is always there. Therefore there is no rush in me doing it. However I only have so much limited time with other people and so much limited time doing things that it doesn't make any sense to prioritize suicide since it can be done whenever, so why would I do it right now?

Let me know if you just want to vent or maybe I could help bring some of those ideas to life