Help 7days postpartum baby #3 and I don’t want to breastfeed no more

Its so hard for me to get my baby to latch and it’s so painful and in the other hand is the public pressure everyone is like poor baby he wants your breast I only pump for right now but I need advice of how introduce formula with out me feeling so bad mom other babies 6&2and I only breastfeed my 2year old for a month 😭😭😭😭😩help