My sudoku

Kia ora for maths - as you can see my sudoku I have random numbers in each box and each column/
row, but they ain't just any random numbers it goes from 1-9 from in the boxes and across in a row and down in a column, and you can see that its not finish and their are a few missing numbers please help me and try and figure it out, and the sudoku is really really hard, maybe you should try it yourself remember to make a copy before you start HERE IS THE LINK TO THE SUDOKU. If you don't want to do it create one yourself or get one of your friends to create one for you so you can answer it.