Does it ever get better

My baby is 6 months old and still doesn't sleep well. She's inconsistent with when she wakes up at night. Sometimes she wants to eat sometimes she doesn't. She's up for the day as early as 5:30 and it's a struggle to get her to go back to sleep. She won't nap except in my arms for maybe an hour. I'm going crazy. All my friends with babies this age are already sleeping through the night and they can just put them down wherever for a nap. Meanwhile my 6 month old still sleeps like a newborn. I feel nauseous every morning because I don't sleep. We have a bedtime routine, we've tried literally EVERYTHING. Everything. Wearing her for naps, sleep suit, rock n play, everything.