Don’t want to be a mom anymore

I need some advice on what I should do. All I know is I don’t want to be a mom anymore. I can’t mentally do it. I have 2 under 2, their dad works all day so I am basically taking care of them by myself 24/7 no help. I’m not mentally strong, I am suicidal at this point. I honestly feel like a bad mom and someone else can take better care of them. I know their dad doesn’t want them in foster care but I can’t fucking do it anymore I’m falling apart. I have no family to help. His family is overseas. I feel like I’m stuck and it is so hard to deal. Also to add I don’t believe in ppd nor do I think this is it.