How can bed sharing be avoided?!

I’m a ftm and I don’t understand how people avoid bed sharing?! I hate doing it but my baby will not sleep on his own. He wakes up instantly if u place him in the crib. We have tried everything, putting one of my tops in, warming it up, white noise machine, rocking etc but nothing works.

At the moment me and my partner take turns sleeping soo baby can sleep on one of us because it’s the only way to get Some sleep. It would be nice for both of us to be able to sleep at the same time again 😂😭.

Any tips?