Feeling like a failure!

My daughter is 2 Weeks Old and she is getting worse day by day and crying more and more, I’m breastfeeding her and she want to be always on breast ! Sleeping with me ! I don’t sleep at all or have freedom ! I got 2 more kids 1.5 year old and 4 and I can’t give them time I don’t want to breastfeed anymore cuz she’s so unsettled!!!! If she would not be fussy I would continue! My fiancé abused me saying I should feel shame ! Lots of mom breastfeeding and have same problem with baby ! 😭😭😭 I’m feeling bad ! I want to breastfeed her trust me but I just can’t cope