Simple budget for a tight month - 10 months and counting

My income is now a fraction of what it was as a social media manager and I am trying to cover the essentials. The rent is fixed and the car payment is high. Any apps or methods?

Sell things you do not use. I made about $150 from a weekend of listing.

A paper list of bills by due date helped me more than an app. I could see the month at a glance.