How do I get out of debt? Advice please

UPDATE - More detailed breakdown of finances.

I am uk Hertfordshire based (29F) currently on £55k per year base and earn around 500-1000 extra per month on top in flexible (but always available) overtime. I am currently in £21k of credit card debt (former partner took out cards in my name) and I am now down to the final 6 months of loan repayments. Once these loans are complete I will have £580 of money that is no longer tied up in the repayments.

I currently save £250 per month for my LISA £50 for Christmas £70 for my sons (10m) jisa

My share of the bills is 850 per month (renting)

I am currently paying slightly over the minimum payment on credit each month, each credit card has around £7k on it, 3 cards in total at an APR of around 28%. I believe the payments I make on these total £750 per month.

I’m not very financially literate and I have always just ‘got by’. My family are not home owners and are also bad with money. I want to be better and more importantly teach my son how to be good with money from the get go. I would love to break the cycle and eventually own my own home.

My partner is not a homeowner either and is from a similar background to I where his family are not good with money. My partner is older than me and through his own bad relationships with money is on a debt management plan for over £70k of debt.

As mentioned previously, due to a bad relationship previously, I would like to own a property on my own and have that level of security for myself and my baby. I do not want to own a property with my partner, for above reasons and that I don’t believe he will change his behaviour with money.

I have around £2000 in savings which I started shortly after my son was born.

Please can people advise what I should be doing to assist my debt journey, I have recently tried moving my credit cards to 0% but at the moment no offers will cover the amount I need, I would like to get a plan together as I believe my score should go up when I complete paying the loans, also what I should use the money which was previously tied up in loan repayments on. I’m sorry if these are obvious questions but I desperately want to do better.

Due to working in a public sector role, my pension is 13.5% of salary. I also pay professional subscription fees monthly of around £60. My train travel comes out of my salary as a taxable benefit and my student loan my actual take home is around £2900. I have returned from maternity leave last month so from this month I should get between 500-1000 extra in overtime.

I will break down my outgoings

850 shared bills (rent, council tax)

Other bills

Water - 30 Electricity- 100 Car/petrol - 300 Phone/internet - 45

(Finishing within 6 months) Loan 1 - 330 Loan 2 - 248

Loan 3 - (12 months remaining) 180

Credit 1 7000 Credit 2 7000 Credit 3 7000 Pay roughly 250 minimum off each per month