Feeling horrible

I really want to breastfeed but kiddo won’t latch with out the darn nipple shield. I have been pumping every 2.5 hours for 25 min and only produce 0.50-1.0 oz in each breast. My breast are killing me and my nipple ache. I hate pumping I really wish she would latch. She’s almost 5 weeks and we have spent so much money on lactación cookies and teas. WTH is there else I can do. I feel like a failure. I really want to breastfeed.