i just dont even know..

I’m 25 with 2 kids and it seems like this past year has been all kinds of crazy.First I had met my fiancé then we got a house together soon after that he got locked up,After that things started to change his family has partially turned against me and the kids they don’t act like they want us around,there very rude and hateful towards us. There constantly getting mad when my family comes to visit they won’t talk to me an the kids they only contact me to see what they can find out to gossip about us,I have to depend on them for transportation because my vehicle has currently broke down they treat us anyway they want to because they know I will have to depend on them to get back an forth to places when they get mad they don’t talk to me when somebody tries to help me an the kids they get mad an try to start drama.There goal has been made known that they are wanting to take my kids and raise them instead of me(even though they don’t truly care about them.) it’s constant battles of them smarting off and being rude when they invite us to family gatherings they act like me and the kids aren’t wanted there his mother constantly tries to figure out ways to aggravate me so she can find reasons not to be around us or do anything for us if she can’t get her way by doing that she pouts (reminder she’s 50.) then when he calls her she is continuously telling him a bunch of lies so he would call an chew me out and cause problems between us even has my neighbors lieing on me. They hardly ever call or text to check on the kids unless they want to make there self look good infront of the other family members has went as far as turning some family members away from me and the kids.they constantly trash talk my kid that’s not from him calling her hard headed an that she don’t listen an telling everybody she’s wild.(she’s 4 years old.) her parents uphold her in her cheating on her husband and act like she dose no wrong. If we don’t do what they say then we’re no good to them.i continually try and try but the stress and aggervation just ain’t worth it for me to keep trying but yet if I don’t have some kind of contact with them then me an the kids don’t get to go anywhere.its just like no matter what we do were wrong if it’s not about them or helping them out,my soon to be mother in law pays people to help her clean her house I have cleaned her house for free an yet still don’t get a thank you she acts like she dosent even acknowledge it,when somebody else tries to help me an the kids were in the wrong cause there the only ones that’s supposed to help us apparently.im just emotionally an physically wore out.what should I do?how should I deal with this?