Is it normal to control your dreams ?

Is Is normal to be able to control my dreams. It started when I was around 12 and my older brother started being abusive towards me and my mother . My mom had just gotten a divorce and was working in fields 4am-10pm . So I was often left alone with him all day after school. We had never had a particularly close relationship due to the 5 year age difference but out relationship only went from bad to worse . At first we would just constantly argue and he ended up punching holes in the walls . But then he started looking for more reasons to fight when i wouldnt respond and try to ignore him he would then just kind of. Torture me emotionally by squishing my kittens until they yelped in pain . When I grew to 13 I started fighting back I mean like physically fighting of course I would loose for obvious reasons and would usually end up with a bruise or two but I never cared for physical pain . My mother was obviously worried and hopelessly tried to control him . But his father's whereabouts being unknown w
and him being 17 . She couldn't do anything. She tried multiple times to get him therapy but he would just be angry and punch walls and destroy our homes. So my thirteen year old self had no escape to the chaotic nightmare that was my life and became extremely depressed .this is she the dreams started . When something in my dream was dramatic my brain just thought "this isn't even real and with that I would realize that it wasnt and start controlling my dreams I would swim , fly and sing in my dreams . But when I tried to controll it too much I could feel my sleeping state slipping away and I would wake up. After years this has continued even though my brothers abusive rants haven't. I was just wondering if this was normal .