Humans can’t photosynthesize so we are heterotrophs

Yes, we are heterotrophs

Explanation:

A heterotroph is an organism that cannot manufacture its own food by carbon fixation or photosynthesis but depends on autotrophs which produces their food through photosynthesis and therefore derives its intake of nutrition from other sources of organic carbon, mainly plant or animal matter. In the food chain, heterotrophs are secondary and tertiary consumers. Humans, of course, are heterotrophs which means that humans can only sustain themselves by eating plants, or by eating animals which also depends on autotrophs for their food