Data safety

Hello,

Everyone. I hope that all of you will be fine. As I am a golfer. I don't have technical knowledge. But I am using Dell core i5 for my golf website. As I have saved a lot of golf rangefinders, and golf grips picture in my internal drive because i am posting them on weekends. So those pictures get corrupted. Now I can't open those pictures.

Please guide me where I will keep my safe data. So I can access anytime easily.