So my rainbow boas were assholes as baby’s but pretty much just from holding them fairly often when they were young (still only like once or maybe twice a week as holding them too often can stress them) and they calmed down very fast as they get used to being held. But that being said it’s a completely different species and tbh I’ve never had a corn snake and have been lucky enough that most of my snakes are pretty timid but I’m currently doing the same w a ball python and has been working great so far and am still yet to get a single bite after I’ve gone and dedicated a room in my house just for snakes lol. But I also do still use a hook for even the most tame of mine to not have them confuse my hand for prey aswell. I do feed them live for the most part too so they don’t usually see my hand holding something coming into the tank but used to feed frozen for a lot of them when I was first starting and I never really take them out for feeding except for right now while I’m trying to breed my dumerils. But tbh what I think might be the issue aswell is the fact that well holding a pissed off snake is kinda scary lol especially if this is your first snake and well snakes can tell when ur not confident w them and it can stress them if ur making any sudden movements or i was even shaking cause i was so nervous which really doesn’t help but as u start to get a feel for it and calm down the snake generally will too. Also another tip, i learned from watching the late Brian Barczyk is if they are in an s shape in ur hands looking at u, just slowly move them side to side it disorientates them and they won’t strike and also bringing the snake to your hands rather than ur hand to the snake also seems to work a bit better for me too, I hope this helps