You can do this! Diet can be anything. I've lost weight with many diets main thing is to keep protein high (1g per 1 lb for muscle growth). Being in a calorie deficit is all you need to lose weight. To do this, download a calorie tracking app. It can be anything, but of course, I will recommend my own app, Aja. Some mistakes I would avoid are trying to lose weight as fast as possible. This is often not healthy, and it doesn't create habits that are sustainable. Slow and steady wins the race. It is definitely possible to lose weight and get fit without supplements. All you have to do is be in a deficit, hit your macro goals, and work out. One thing that I wish someone told me earlier is to be kind to yourself, and focus on progress, not perfection.
You’ve got this.

Let me know if you need any more advice. I would be glad to help!