Separated from my husband and unsure what I am entitled to for the children & the house we own

I am 7 months into my separation from my husband. We have 2 children aged 11 & 9. when he left The property I had no job & no money. I’ve secured a job & he pays the mortgage of £575 a month but that is all. He does not contribute to anything for the children, school dinner, trips etc. He only sees them 2 times every other week. Ive been in & out of hospital for 3 months & this means I’ve been unable to earn as I’m on 0 hour contact so get paid for what I work. I’m drowning in the household bills & he now is trying to force me to sell our property. What will I be entitled to & how can I get help? I’ve already had to take 2 crisis loans out which I pay back every month but I’m overwhelmed on how to deal with this & can not afford to see anyone for legal advice