First of all, don't be embarrassed, it's easily done, loads of people do it. I was one of them years ago.
Secondly, it's not insurmountable at all and you're panicking so try to stop that, it's fixable.
If I've understood correctly, the issue is that you don't have any cash right now and some debt, is that right?
You have £28k in an ISA
£200 in your current account
Owe £2.5k on a card
Owe £2.5k to a family member
Focus on the first thing, which is when will you get paid and how much will it be? Can you afford to eat between now and then?
Then focus on your income and your outgoings and the difference.
So income £xxx
Then list all your outgoings, include rent, electricity, gas, water, council tax, car payments, petrol, transport, insurance, mobile phone, Netflix, subscriptions, gym membership, card payments. You should be able to see all your direct debits in your bank account.
What is the difference? And what is the amount you're paying on the credit card?
What are the terms of repayment to the family member?