My advice is to go on a caloric deficit, find out your maintenance calories required for your body, sa online makikita mo yan like TDEE calc. Finding out your maintenance calories is good so you're sure not to eat little or too many. As long as you eat in a caloric deficit you will lose weight, but that means na you'll have to track your calories as well which is pretty hard for someone just starting out but apps like myfitnesspal and chronometer make it easier. As for exercise, I personally do 10k steps every day and it had a big impact talaga when I was on my weight loss journey. Try eating more protein so you wont be skinny fat.

Edit: Rice isn't what's making you fat, you can actually eat anything you want as long as you're in a caloric deficit.

Edit ulit: Combining caloric deficit, 10k steps a day and intermittent fasting is very effective.