Please help my children have Christmas

Hello guys I'm wondering if anyone can help me, ever since my partner left me and the children have been really struggling. This year I have been unable to get them any presents and I'm worried that santa won't be coming to them this year. They have been really good and my daughter has been saying I'm going to get some this year as I've been good, it's been breaking my heart as I don't know where else to turn to. My children believe in him as they are ages 5.....3..... And 2. I'm just asking for a little bit of help so I can make sure my children at least get one thing this year for being on the nice list. I've got no Christmas food no nothing as all my money has gone on bill, I'm even not eating properly myself to make sure they are fed. Thank you in advance ❤️ god bless you