This is gonna sound dumb but AI is actually fairly decent if you give it enough details. Tell age, weight, sex, height, and schedule. Once you start working out go back to that chat so that it keeps the memory and update it on current weight and how much you can lift how far/fast you can run and it usually is pretty good at filling in the knowledge gaps and letting you see progress.
A lot of it starts with what you’re eating. Don’t jump right into a calorie deficit, just be mindful about what you’re eating. Also, cardio can help, but it makes me really hungry so that might not be the best if you’re trying to lose weight lol. But I’m not an expert! U can try going to the campus nutritionist!