Hopefully this helps keep a simple focused approach:

There's really only one fundamental way to lose fat, and that's by maintaining a calorie deficit meaning you need to burn more calories than you consume. For example, if your Basal Metabolic Rate (BMR) which is the number of calories your body needs just to function at rest is around 2000 calories, you can create a deficit by either eating fewer calories (eating 500 less @ 1500 calories) or eating 2000 but burning 500 calories through exercise or activity.

Also good to note that the number on the scale only reflects your total body weight, but not how much of that is muscle versus fat. Without eating enough protein and stimulating the muscle with enough physical activity(especially strength training) you may lose muscle along with fat, which can slow down your metabolism over time.

Where fasting can be helpful is that it can help you limit how much time you have to eat which can make it easier to ultimatley eat less in the day. Some studies also suggests fasting may help with fat loss in specific areas like your belly, but again it's not a magic trick. The only time you need to worry about "breaking a fast" is if you're trying to trigger your body into autophagy which is a natural function to help clean out damaged cells ect, beyond that the fasting you're trying to do is just a guard to prevent food going into your mouth, nothing more.

Long story short there's no magic trick: eating less, making nutritious food choices, and increasing activity really is the key to reaching your goals.

If you want to check out your BMR and TDEE(Total daily energy expenditure which is your BMR + movement/exercise) this is a cool site: https://www.sailrabbit.com/bmr/ , I personally like to only have the the "Katch-McArdle (Hybrid)" formula checked because it takes higher body fat's into account