This book and the resources in it saved me:
Looks like others have made some good suggestions as well :)
You are doing a great job! You and baby are both new to this and it takes time. Remind yourself that any decision you make is the right decision for you and baby at that moment.
My son refused to nurse for a couple of days after leaving the hospital because of a lip and tongue tie that we had fixed. I started pumping and bottle feeding, which I felt really guilty about. A lactation consultant made me feel better about it and gave me a plan. We continued to pump and bottle feed but offered breast first (except at night, sleep is important). We kept him on a 2 hour schedule. If we waited for him to show feeding cues, he would start screaming and was so hard to calm down. An angry baby just isn't going to latch. When baby was calm or sleeping, I would put him skin to skin and offer breast any time he showed feeding cues. Eventually we got to a point where we were only breastfeeding and I was able to stop pumping.
I was also given a book by a lactation consultant and I loved it! Its not super long like most and it was really helpful. Its called Breastfeeding Made Simple: Seven Natural Laws for Nursing Mothers by Nancy Mohrbacher. This is the Amazon link https://www.amazon.com/dp/1572248610/ref=cm_sw_r_cp_apa_i_RDueBb536E20Y
As for the crying and fussiness, we are still trying to figure that out at 6 weeks old. Some nights he doesn't sleep more than 20 minutes at a time. But everyone keeps saying it gets better soon, so here's hoping!