I found the first 5months really hard! I didn't enjoy it much and cried a lot. Everything felt like such an effort, lugging so much kit everywhere and coping the crying and grizzling. My DS seemed to grizzle more than other babies, when I met my NCT group he was usually the one crying and when I went to baby groups he wanted to be held constantly! I felt like I was bending over backwards to make him happy and he just grizzled at me all day.
Then around 5.5months something changed. He just got happier in general and cried less, until I could go a whole morning then a whole day without him screaming! Once he could play independently with toys he was able to sit and play happily by himself for 10-15mins. Instead of grizzling he started laughing and making happy noises. He's now 8months and I have a very strong bond with him. He's affectionate and funny, he makes me laugh all day and I can't stop kissing him! We have fun when we go out, he likes his buggy and interacts with people and the world around him. He still wakes 3x night to feed but he's so excited to see me in the mornings it all feels worthwhile.
Things that helped: jumparoo, starting solids, being able to sit up. For me, getting out every day kept me sane! We went to cafes, park, baby cinema, yoga, swimming, breastfeeding cafes and groups, baby sensory, music-time, signing, MN local meet-ups, walking club, buggy-fit, Sealife centre, zoo etc... I could go on!
It will get more fun! For now, just concentrate on getting through each day. The bond will develop naturally as your baby gets older.