Kudos to you for learning about IF (intermittent fasting)! If you are looking for a dietary intervention for weight loss I would suggest that it may be most beneficial to simply focus on eating healthy, whole, real food ie avoid processed pseudo-food and things that have ingredients you can't identify. Eating simple, honest food ie vegetables, fruits, whole grains and unprocessed/non-deli meats and cutting out sugar is a great way to go on the journey of reclaiming your health!
While our diet matters our weight is ultimately controlled by our hormonal status, which itself is impacted by what we eat. Other important factors are drinking plenty of clean water, getting enough quality sleep, managing/resolving stress, getting daily healthy movement and addressing any past traumas (physical, psychological and emotional....doesn't have to be a major event multiple small traumas shift our brains too).
These are some of the foundational areas to incorporate into your wellness adventure. Find what works for you where you're at now, something you can joyfully sustain. There is no "one size fits all" program for people as they reclaim their health and there is "no size" that will fit you all the time. Each of us is a unique expression of humanity and we are all in a state of constant dynamic change so what we need to heal shifts too.
All the best to you as you discover your own path to reach your goals!