Who buys your food and the animal food? Do you have any grandparents that would help you? Do you work?
Do you have a car? Trash service at the trailer? How are you getting internet access? Electric, water?
If there is trash service, start putting out bags of trash, and anything you can get them to haul off. There is no excuse for you piling up trash, none. Get it out of there, and do not contribute anything else to the pile either. Bag it and carry it outside and get rid of it as you go.
They make bug and roach spray all day long, so get trash out of the room filled to the ceiling, and spray that room down, making sure animals cannot get into it. Shut the door. Air flow in the rest of the place to keep fumes out of your breathing area. And keep that room cleaned out.
Keep counters cleaned, floors swept, and laundry done up and put away, and start in one corner and start there cleaning, and then work your way out. Even 20 minutes every couple of hours will go a long ways.
And if social services or AC is called, your animals will be gone ASAP, and you will be too, if what you are saying here is true. So get place clean now, while you can.
I don't know what all has gone on, is going on....none of us are close enough to help you, or to see the circumstances, so you are going to have to help yourself.
Quit crying and start doing something to change what you can. Tears aren't going to fix anything, or change anything.
While this is hard row to hoe, there are worse things out there. So you are just going to have to grow up and fix what you can. And you CAN fix the trashy, smelly, filthy trailer. So do it.
Have you applied for college yet...filled out FAFSA? If not you need to do that ASAP also.
Get busy changing your life, for whatever reason, based on what you have written here, no one else is going to step up to plate, so you are going to have to do it for yourself.
Horses make me a better person.