Hey, welcome to the forum.
1-2 pounds a week is realistic. All you really have to do is cut out 500-1000 calories under your maintenance. There are 3500 calories in a pound so you can do the math in that regards.
A few jump starts that will really help you could be cutting out sugary drinks, cutting our any unnecessary snack times and find low fat/sugar alternatives to what you eat. If any of those apply to you, then you can set yourself up to 1 pound of loss per week without too much effort. Although that's just good for a few pounds then you have to start making some real life changes.
If you provide your height and weight we can offer more specific tips as to how many calories you can eat for weight loss and how much weight loss you should be aiming for.