What’s the best diet for my fitness goals

This depends on so many things: medical history, preferred eating style, activity level, metabolism, medications, specific goals (do you want to lose weight? Build muscle? Maintain?), how many meals you like to eat each day, so.many.things. This is why one-size-fits-all nutrition programs are a huge red flag. I recommend focusing on the foundations first: eating enough vegetables and leafy greens, protein intake, hydration, eating slowly and mindfully, and eating to your needs.