yes, me too, and I've been in charge of my own life (single parent) for almost all my adult life.
If you don't do it, it doesn't happen, but it is nobody else's business! You can choose to do it, or you can choose not to do it. Your choice.
If you have had abusive relationships you probably have a voice in your head saying it's not good enough to have a dirty house, an untidy garden, an empty fridge, unpaid bills. Tell that voice to xxx off!
Stop judging yourself. If you don't buy food you have the choice between eating out or making something experimental with what you have. Your choice, either is ok. If you want to eat pasta every night and leave the bowl in the sink you can. Or go shopping and wash up.
Paying bills is more of a problem as not doing it has consequences. So set everything you absolutely have to pay up on direct debit from a bills account, and then review each bill to see if you can get better value. Cancel everything else.
With regard to getting a job, make a plan. Tick things off and have faith that if you keep putting in good applications, a job will arrive. Register with agencies and try things out.
Congratulations and enjoy your freedom!