Who else has children who won't eat bite-sized pieces? The child doesn…

Who else has children who won't eat bite-sized pieces? The child doesn't even take it, for example, I cooked chicken and chopped it very finely into fibers, mixed with vegetables (puree), he ate it, but just gave him a fiber to try, he choked. Tomato, cucumber (everything that melts in his mouth, he can eat, chews). Even like that I worry that I won't learn ? And I also saw a video online where they provide first aid to a child, he choked, couldn't breathe, was like a vegetable. After that, I'm scared too, my phobia. Share your experience, how did you do it?