Give me all your advice Tipps and tricks

My son will be 7w old tomorrow. Since the day he was born he was a terrible sleeper, a very fussy baby... grunting, moaning, over stretching and constantly battling the digestion issue. We tried everything to calm him down and make him sleep a little longer than a few minutes during the day. But he wakes up screaming bloody murder no matter when, during the day and at night. It’s not like he wakes up and is kinda happy and rested he’s always crying. I feel like he’s very sensitive to everything. From normal handling like changing diapers, clothes to whatever else there is. He always is borderline to freaking out and it makes me sad and kinda worried. We try to be really gentle with him but he cries no matter what. Why is he crying so much? Yes, he’s a baby but why all day for everything and not once he’s just satisfied and relaxed. He does poop and pee. He’s just straining so much and it makes our days and nights miserable. I’m not looking for people to judge me(I’m a second time mum) I have enough experience but he is something else 😩🙄 we really try to make him sleep wherever we are but he just can’t fall asleep. Then he’s over the point and is overtired and can’t settle for long. Tried all natural remedies! Now I need y’alls help! 😅