Welcome and well done for reaching out here, I can hear you have a few things going on for you at the moment and that is really tough. We are here for you, for some comfort, for a chat, some support and to help you through this time if we can.
Parents separating and divorcing is tough on everyone, the end of the family as you once knew has now come to and end which is sad, however it provides opportunity. It might be hard to see this yet as it is new but now your mum can be the best version of her and your dad can be the best version of him. I know this may also be hard to see at the moment as they will have to do some work to heal from their relationship ending so I guess I am just saying to perhaps consider them and how they are feeling and thinking too. This is all new for them and change does take some time to settle in to.
Saying that, hearing those names and those words are so very hurtful and I am sorry that you were called those things and that you do feel so very much emotional disconnection from them at this time. That must be so very hard, I am grateful you have some wonderful friends to provide you with support.
As far as being with your siblings I think facetime if you can might really help, especially in this time of isolation and social distancing. Try to keep your siblings as close as you can and phone calls and skype etc can be really good at this time. Sure it is not a hug or the real thing but there will be time for that when all this calms down.
There are some really amazing people at Kids Helpline on 1800 55 1800 if you feel like an in person chat. They are so very supportive and can give you some great advice too.
I am so grateful you have your friend, ask for a hug, try and accept the love they have for letting you stay and while it is not your home you can still feel the care and support there.
Please keep talking, that really helps too, we are here for you and I am so very sorry you are going through all of this.