Please help me make my garden a useable family space. Its been neglected for many years before I bought the house and needs both hard and soft landscaping to make it safe and useable.

I live on my own and work fulltime and have saved for the past two years so that I can hire tradesmen to complete the work. Unfortunately the people I hired only completed a few days work before abandoning the job and without refunding my payment for the outstanding work. Any contribution would be greatly appreciated as I'm not able to fund this on my own anymore. Thankyou.