If I were you, I would write Personal Reason on CV.Mostly,the company will ask many questions of your resignation from the previous company.(Talk in positive way)
The best thing is to present yourself all your best to make them select you among many applicants. Ex. look for their requred qualifications, what they need and do you have what they want or not.
If you insist to know the meaning in English as the above questions,I will let u know as follows;
I would like to get a new experience that I might not have a chance to get from my current or previous company because of (your own reason)
If I have a chance to be selected to work for your company,I will be able to develop my skills.
I believe in my career development if I work for the best company like yours.
Wish you good luck.