Okkkkkkkkkk.... I'll do it for you : )
But, before doing that I want to highlight a few grammar mistakes you've done above;
,I admitted that I was lost with my basic of pP hysics ,
hard -workinghardworking and also patientpatience will help you to overcome anything
... hardworking is one word :)
Also, for me to help you with this prompt, I want to understand better what you mean by these lines;
Until I reached grade 12 ,I realized that I had to gain all the knowledge which I missed before. The reason was that in this grade , physic was not include in one respect anymore, but now we need to know all the aspect of basic from grade 6 to 11. The other reason is that I wanted to have the best result for having a chance go to university.
Do you mean that Physics was not a mandatory subject until grade 12? I don't get a clear idea as to what you mean... Quickly explain that to me so that I can help you today : )