Today, I had fiber heavy oatmeal and coffee for breakfast. Then two BBQ sandwiches (should've had 1) for lunch and then I just had a bowl of raisin bran for dinner.
Props for trying and I'm sure this feels like a significant change, but I really suggest you be more descriptive (at least, to yourself).
Not all "oatmeal and coffee" is created equal. That's either a 200 calorie breakfast or an 800 calorie breakfast depending on who I ask. Throw a fuckton of brown sugar and other crap into oatmeal and it starts to become a morning dessert. Same for the sandwiches; choice of bread, sauce, meat, and the ratios between them. Bread really sucks for food in comparison to potato. A bowl of cereal for dinner is almost as nutritionally devoid as you can make it -- sure, it's slightly better than ice cream but its really just a shitton of simple carbs. Take a fiber pill and eat a baked potato with some spice and a dab of sour cream.
At your current weight, you'll absolutely lose fat by abstaining from the truckloads of garbage that got you there -- but
to actually achieve a healthy weight and stay there, you must learn how to plan, shop for, and cook actual food.
My wife and I are in the process of losing the last ten pounds or so (I'm 6'1 195 20% bf), last night we had:
salmon filet lightly coated with olive oil (300c)
spinach salad with chopped cucumber, carrot, and onion (80c)
baked potato with sour cream and hot sauce (150c)
That's our largest meal of the day. Tonight I'm making chicken bowls:
8 oz sliced chicken breast (250c)
quartered and baked potato with sour cream and hot sauce (150c)
And a huge spinach/carrot/cucumber salad with very light sauce (50c).
I'm using unprocessed meats (protein) with a bit of oil (fat) and potato (carb) to hit macro targets, and using high flavor things like green onion, spices, and hot sauces to make the meal more interesting.
Keep in mind, most people, even healthy people not following a strict diet, have "cheat days" but they don't call them that. They just eat slightly below their maintenance rate throughout the week and then have a bit extra on the weekend. All too often you see people struggling with diet, but when you really investigate, you find that they are suffering throughout the week but then smashing through 5k calories on fri/sat just like they used to and all their suffering throughout the week is for naught. I've never been obese but I can happily put away 5k+ calories eating what I want to and having some craft beers. If I intend to do that on Friday, then I need to plan for it by not indulging throughout the week.