Help me to manage my finances better

“I could blast the sofa debt but it’s relatively small. I would consider our phones to be required yes, some post divorce politics, he needed a phone I got him a contract. Cms is difficult, the ex has engineered a situation where is see him around half the time, but he only stays with me 1 night a week hence the reasonably high payment, I’m on with delicately solving this issue. My main issue is that I feel like I should be ok with £1k left spare but I’m not, others have suggested managing my spending, which seems a good idea”