Breast vs formula

I know a lot of people say breast is best. I feel as though fed is best and trust me, I really want to breast feed my baby but I had an emergency c-section and then a NICU baby and this is making it hard for my baby to latch to me. With or without a nipple shield. I am overwhelmingly sleep deprived and this is making matters worst. My family is making me feel bad that I want to formula feed because he will poop a lot more and have a lot of digestive issues. Can I please get other opinions?