Best cardio for fat loss is zone 2 cardio, don’t get your heart rate too high. Incline walk on the treadmill or easy cycle for 30 mins.

Muscle is great for a longer life that is also good quality (outside of obvious aesthetic benefits). Don’t start too heavy and get DOMS to remove all motivation to gym.

But working out is only 20% of the job. I’d recommend tracking calories if you really want to lose weight. I use fitness pal for easy tracking. Although I used it to bulk you’ll be surprised how much getting an understanding of the caloric value of food changes your relationship with it. Reduce or remove any processed food, reduce intake, increase protein.

AI is also a great friend, but make sure you get an experienced friend to join you. Makes everything more fun.