Does breastfeeding change/ruin your boobs?

Michaela • 🌈RIP Zara-May my baby 28.2.21💔 💕 Instagram: mrsmichaelawalker Rainbow baby born 21.04.2022

I am not commenting whether I am going to breastfeed or not. But just curious? I am a first time mum with body issues as it is. What are the changes like? Has anyones not change at all? Does the length of time you breastfeed have an impact i.e. If you breastfeed until they are 1 years old in contrast with someone who breastfeeds for longer...?