Struggling with healthy foods

I am doing a whole30-like "detox". Basically following the rules of whole30 to the extent of removing those foods from my house to encourage better cooking and consuming better foods. My issue is that I don't like the taste of a lot of "healthy" foods. Today, I tried sweet potatoes, mango and cantaloupe and all of them were hard to get down. Even if the flavor wasn't completely terrible. The same thing with the other week when I tried raspberries. I want to incorporate more of these food that will make my body feel better but I don't know if my body is just so conditioned to processed food that it tricks me into disliking natural foods.