Looking for some advice

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Hi my name is Zach im 19 years old and currently 205 lbs. I used to be pretty fit and was sitting around 185 lbs and working out daily. About a year ago i lost a few very important people in my life and i completely stopped working out. I lost all my muscle and shot up to 225 lbs. I am finally back on my fit. I have a loving and supporting Gf and have been able to get down to 205lbs in about 2 months. Recently i hit a wall. I cant loose more weight. My goal was to work out until i hit 185 again and then start working on muscle so i have only been running. I am extremely determined but i am unsure as to what to do next. I had some friend tell me to recomp my body but i don't know what that is. Any Advice?