Feeling like i want to get away from my kid

So my son is almost 2 years old in february. He has been the most impossible child i feel like i failed as a parent. I have a 5 month old who is an angel sleeps through the night hardly cries. My first born is terrible. He screams and screams and screams throws temper tantrums. He wakes up every single night since he was born. Since he turned 1 he screams amd screams every night. I camt handle him anymore like i dont even want him.touching me. I am so fed up and exhausted from him. I have only ever had 1 nighy away from him since he wss born. He is putting so much stress on my husband and my.relationship. i literally cant stand my kid. I dont know what to do.