Echoing what Jo*mar wrote, eating in a healthy way involves eating minimal processed food and eating lots of different kinds of unprocessed food.

The latter include (in no special order); fruit, vegetables, fish, low GI carbohydrate foods (eg, brown rice), white meat, red meat in moderation, eggs, cheese, nuts, pulses (eg, chickpeas), etc.

Somebody who eats a range of such foods will have their nutritional needs met.

It might help if you saw a professionally-trained dietitian. A dietitian will be able to review what you eat with you and, depending, suggest healthy changes.