Remember: eating is a journey of discovery. It’s about exploring all foods, appreciating how they make you feel (both physically and mentally), and using that information to apply an informed approach to eating. Part of this process involves defining your food preferences.
As far as likes and dislikes go: Try all foods at least a handful of times and in different forms. You might not like raw tomatoes, but it’s possible you’ll like them when they are cooked. (Both their texture and flavor change when exposed to heat.) Your palate also changes as you grow. You might find that foods you disliked as a kid are some of your favorites as an adult.
If you’ve tried a food several times and still don’t like it, don’t eat it. That being said, consider the nutrients you are missing by not eating that food and be sure to get them through other foods or supplements (if necessary). If you are thinking of taking a dietary supplement, it’s always a good idea to first speak to a dietitian or medical professional to ensure the supplement is safe for you to take.