i lost the first 25lbs in 2 months by eating 1000kcals per day max, no carbs (except from fruits and veg), red meats and alcohol. and no eating after dinner. that combined with at least 4 days of 1 hour workouts per week. having your fullest meal during breakfast instead of dinner works as well.
things started getting unhealthy after the 2nd month though so i’d rather not give you advice on the unhealthy habits cuz it fucks up your body and your mind. you can surely lose 25lbs healthily :)