Welcome to Psych Central

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Sorry that you've had such a tough time getting your entire posts across. I've run into that problem myself, quite a few times.
Evening had a great tip, which is exactly what I now do with long posts.
After several paragraphs, and I'm ready to post. I click on the mouse, to copy my essay.

Then, under "edit", I click on cut. Then, I click on posting quick reply. If I'd gotten kicked out of the site by my goofy computer, all I have to do is sign back on. I then go back to where I wanted to post, and click paste under the "edit". I know that it kind of sounds like a pain, but it is sooo much better than all of that typing for nothing. I sure hate that too!
Jenn1fer82 made a couple of good points, imo. Right now, it is hard to see outside of the mess that you find yourself in. But, there are ways out. Ways you might not want to take ~ but there ARE options if you really are needing to get out of the house.
Do you have friends or family that could help watch the children a couple of hours per week? Have you tried going to county mental health? There are mental health resources in all of the states. Different states do have different additional resources.
I can't think of any other tips right now ~ my brain function is at it's limits this week. I'll write back if the other things pop into my head. Take a couple of deep breaths. People are listening. We're often happy to help, if we can offer any advice.
Best wishes!