There are so many different theories around causes of colic including overstimulation, lactose intolerance, activity during pregnancy - such as smoking and even birth trauma but it is not clear cut which only adds to the confusion on different remedies.
What works for one baby might not work on another. You have to just find what works for you and your baby. Similarly what works one day, just might not work the next so it is super helpful to have loads of strategies to try.
You might find that your baby loves to be in the 'tiger in the tree' position and that the slight pressure and warmth of your palm on their belly, as well as gentle movement, can be really soothing for your baby but for others, you may find that it is calming touch and containment they are craving such as skin to skin or being popped in a sling or wrap on your chest.
I truly believe that one of the worst feelings about having a baby with colic is the feeling of helplessness, not knowing what to do, how to help them, and watching them in pain.
We, as parents, are hard-wired to protect and soothe your baby - when we're not able to do this it activates our stress response making us feel anxious and tense. There is no training or trial period in parenthood. You are thrown in the deep end and are learning on the job (with very little sleep).