Overwhelmed,
Please excuse my grammar-it sucks. This is long, sorry, I just want to connect with you.
I'm not even sure where to start, so I'll go with I love you. You are a kind and gentle soul and I hurt for you. I am praying for you now, for your peace and safety. I would be a mess if I was in your situation. I don't think you will find any answers about why your kids are this way. It doesn't have to be your fault. I feel like we as parents feel as if we knew the "why" we could fix it.
The only people that can fix this are the ones who are acting out. What you can fix is you. I had a severe depression during my time dealing with my son. I took to the bed and couldn't get up. I had a neighbor come and pray over me. I was so scared that I would go completely crazy and not come back from it. I wondered about ending it to get some relief. I started praying and remembered someone in Al-anon once said
"Just do one next thing".
So I got up and took a shower. That was huge, now, I cried in the shower but I was clean.
Next, I blow dried my hair (it's card to cry and blow, so just blow).
Next I put on just a little light make up. Lip gloss and mascara, I think. (Maybe just Burt's Bees lip balm). It smells good.
Next, I just started walking far enough from the house to not be seen. I know there wouldn't be anyone looking for me but took a path through some trees. I brought my phone and headphones and listened to 80's music on Youtube. (I'm not tech savvy but there is Spotify and other programs and such. It distracted my mind. It's hard to listen to old tunes and think about your kids.
Next, I went home and my family looked at me and asked where I had been. I replied "out" and made myself dinner.
Next, I got on the computer and played Texas Hold'em poker (again headphones in). I took a break from Facebook, Instagram, the news, my phone any other stressful distractions.
Every time I wanted to dwell on the negatives in my life, I picked up a book (romance novel about the court of King Henry the 8th).
Next, I went to sleep with headphones on listening to white noise or meditation stuff. Eventually I went to sleep.
Next,I woke up and did one next thing.
I hope this helps dear friend. Find what gave you joy in the past and do that. You are allowed to make new friends, away from your home that are yours. No one in your family even has to know about them and ruin it. I did it and it was kind of fun to have something for myself. I reinvented myself with that one person.
SELF CARE is the "how" to get you out of your slump, whatever that looks like to you. I think therapy might help you, there are virtual visits, just you a webcam and counselor. All you need is your phone or laptop and internet. There are lot of places have free wifi such as Starbucks, Wal-Mart, etc...
We are here for you and you absolutely
CAN do this. As far as your kids go, as you practice self care, You will get stronger, I think, and be able to better deal with them and their nonsense. I don't know your situation but hope you can get them out of your home. They are resourceful, they have figured out how to live with someone, take complete control of someone and get a free ride. You could put your home up for sale. (I'm kidding, sort of). They will possibly be getting a stimulus check soon, it would be a great time for them to move out. Perhaps you can ask them to leave
BEFORE the checks are mailed out, just a thought.
All of these are just me thinking out loud, not instructions. You are most certainly being abused. As far as your siblings abandoning you, I suspect they will be very proud of you if you stand up for yourself. If I were your sibling, it would be really hard to watch you be abused by your children. Don't worry about the neighbors honey, they have eyes and ears and know who is acting jacked up.
Video I used for negative thinking:
https://www.youtube.com/watch?v=j91ST2gtR44
Video for meditation (I use it to go to sleep)
https://www.youtube.com/watch?v=fWEX3SRX7Ro
Best 80's music eva
Scorpions, Whitsnake, The Cure, Duran Duran, Bon Jovi, Cyndi Lauper, just to name a few...
Again, I love you.
JMOM