Toddler not eats

I am so nervous and angry about myself and my 2 years and 6 months old boy.

I am not happy because my son does not eat any food l proposed to him ( no fruits, no yoghurt, no smoothie no biscuits, ...) I feel so so sad and people and professionals keep telling me that he will eat one day, l just need to give him sometimes. I gave him vitamins and supplements. He could stay all day and just have 2 packs of crips and water.

What can I do l feel like there is something wrong with him?