feeling lost :-(

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Hello everyone Im fairly new here aNd im feeling completely lost amd ready to give up :-(. I officially started my journey at 192lbs. I am 25years old and 5'2". When i first t started I was netting 1200 calories. The first week i gained 1lb. The second week i lost the 1lb. The third week I found a log about TDEE so after calculating it I figured I ahould eat 1800 calories and not log excercise. Well the third week I lost 0.8lbs so I found myself at 191 lbs. This week I aeigjed in and gained 3lbs making me 194lbs! 2lbs heavier than wjen I started :'(. As far as excercise I jog for 30 min 4 times a week and I do Jillian michaels body revolution 3-4 times a week. What am