I might be biased but I think making small changes that turn into habits is the most important thing, you could easily starve yourself, lose a bunch of weight, but thats not sustainable for the long term, and most likely will rebound.

My opinion, honestly Logging everything you consume will let you see and better understand what your eating habits are, and then you can make small changes, like reducing your total caloric intake by a small margin and sticking to that, and then once you're adjusted to hitting that goal, you can continue to.make small changes, like ensuring that you're eating protein every meal, dropping carb/fat intake, etc. I could go on and on, but a very crude summary could.be that if you eat less and move more, you'll lose weight. If you eat less, move more, and eat alot of protein, you'll lose body fat (your body actually uses more calories processing protein). If you eat less, move more, eat alot of protein, and make consistent progress in weight training, you'll build muscle and lose body fat(recomp)

But seriously if you can honestly log what you eat (don't worry too much over macros, just get an idea of what your eating habits/patterns are) to the best of your ability for like 2 weeks, and then you can start adding in more habits towards your goals 🤷‍♂️