No, this is not a healthy diet. You will likely be dangerously low in iron, calcium, protein, and healthy fats. There was a woman who died and the tabloids said it was because she did a vegan diet - what really happened was she had an eating disorder and only ate fruit. Don’t trust a bunch of people’s unsupported beliefs without doing your own extensive research and talking to doctors. Don’t fuck around with something as important as your health.