What diets r there to lose weight in 3 months?

im 180pounds im "5'9" im a female im 18 years old, i need to lose weight any diets that r so good that is that boring, that can eat at home not like jenny craig or so on i dont eat seafood, im trying to reach my goal weight to 145 i cant go to the gym , i have work i do gobacks mostly just walking for 2-hours and walk home 20 mins to 30 mins at a slow pace plez help me and how to control not to eat junkfood whats hel[s not to eat junkfood???? and how much will i lose in 3 months?????