Please check my sentences grammartically

I have to save my WHOLE salary at the bank. Some people told me that I would feel lonely. My parents ARE friendly to me. Until I WAS 13 years old, I begged them to GIVE ME a sibling. I thought being an only child would be better than having a sibling. I could see mold everywhere on the wall. I decided to change THE wallpaper. At the beginning, I headed to home depot to get SOME home improvement items. I removed the wall paper and scrapped off the mold. I put the wallpaper on the wall. I had to change the wallpaper of the ceiling. It was risky, because I needed to be on the ladder. I lost my balance when I was on the ladder. I fell on the floor and twisted my ankle. I knocked down the bucket OF PAINT on the floor. The paint made the floor dirty. It was painful, and I felt like I was at the end of the world. Fortunately, all of my family members WERE THERE. They helped with THE cleaning. It took just 20mins. Ever since, I WAS BEING careful when I’m CLIMBING on the ladder or TO go down the ladder.