Feel like a failure

Sometimes I feel like a failure mum. Everyone else can do but not me. For example, MIL come in the morning and afternoon baby such a sweetie, rarely fuss and sleep very well, eat very well. But once MIL pass back to me in the evening, baby keep fussing, can't make it sleep, sleep also only sleep for 10 mins and then wake up, drink milk also can't finish, keep crying non stop. I can't carry baby for long also, I feel like I even lose out in terms of strength with MIL. She can carry and rock baby for hours on end, but I can only do like 20-30mins and my arms are sore already. I dont know what am I even good for. Just ranting abit before going back to take care of baby.