Seriously my love, nothing can prepare you for the total change a newborn wreaks on your life. It's like having your head blown off. Two weeks in I was barely sane.
You are totally normal, and it's not parenting you don't like - it's total sleep deprivation and never having a single second to yourself. It is not always like this, it gets easier, and you start getting more back for your trouble. Right now all your baby offers you is need, need, need, which is bloody shattering especially when you are a ftm and terrified you're doing it all wrong. But there will come a time, not at all far from now, when they will smile at you, say your name, and make you feel like the most special person in the whole world. Hard to imagine in the thick of the newborn and new parent phase though. I doubt there's a mother in the world who hasn't had a "what have I done?!" moment in the first few months.
If it's NHS bf support that's not helping you, I'd ditch them and talk to La Leche League - they're passionate and knowledgeable and experienced breastfeeders, they aren't on the clock with a list of patients to see, and they care about how YOU are, not just the baby's curve on the centile chart. Really, it helped me so much just to sit in a room with women who didn't seem to be broken by motherhood telling me they'd been exactly where I was and offering real empathy and support without constantly checking their watch.
Sputnik, my baby was like yours. I felt like I was doing awfully because she was so ratty and hard to please compared to my friends' babies. Far too late I cut out dairy, and that helped a lot, but tbh I think she would always have been restless and demanding - it's her nature. But that's because she's frankly very very clever and she needed a lot of input or I think she was bored senseless! Once she could crawl she was much better, once she began walking (at 10/11 months) she became genuinely jolly, and now she can talk at 21 months she is a genuine delight. Still very demanding of attention, but she defaults to being happy, rarely whinges or cries, never really tantrums - just ridiculously bloody persistent, which I actually quite admire.
It's worth excluding any possible issues - well worth checking symptoms of CMPA or other allergies as they can make babies very cranky and it's not all about rashes - but it could be you just have a baby that hates being a baby, like mine, and they will get better over time as their skills expand and their dependence reduces.
And oh my God have a drink, you're fine to!!
xxx
Chin up new mums - you are not abnormal, it's bloody hard work, but it absolutely will get better.