Cockatoo's are definitely not for most people. The smaller species are not as bad and not as demanding as have a little corella cockatoo name frankie as he way more layback and not as demanding, or as destructive as my U2's, but the larger ones like umbrellas and moluccan are on the hot sheet for good reasons. They have the temperament of most humans and intelligent as well and quite demanding as a result. They are quite rewarding as well once you get past all the stages of learning how to adapt to them. My U2's especially Baby as she was the first in my flock goes everywhere and travels with me on my shoulder and is free flight trained as well as potty train. She does as well have a temper and my most aggressive and destructive bird as well. I had people offer me way above what I paid for her and won't give her away even for a million bucks as don't know what I would do without her. She a family member and best friend to me as well as my other birds.
If your thinking about adapting a cockatoo, or any other bird, I suggest go to a rescue first and work there for a while, or meet and get to know the birds and learn how to handle them. Then you can see noise level and required cleanup and personality of the birds and etc and to see if that particular bird will be a good fit, usually it the bird that picks you. Like Baby my U2 she pick me as no one could handle her reliably and first day working on a project she was sitting on her stand as she done for years and put her foot out and I pick her up and she didn't attack me, or bite me and ended up bonding to me. She before that would attack and hiss anyone that came near her, or near her space, she would even come down her stand and chase people. last owner could barely handle her as she was given to them by the mother sons as she past away of COPD and he couldn't handle her and baby pretty much almost took his finger off, even cracking the bone sending him to the hospital, so he sold her to them, as he was going to drop her off at a rescue before that as he fear her and didn't want to just keep her in a cage, they offer to buy her, when another customer told them the story. He dealt with wildlife as hawks and etc. The last owner was shocked that she adapted to me so quickly and didn't get attacked. I ended up adopting her off of them after training her for several months. She taught me a lot and had tons of experience with large and small birds, but she was way different. Now very social and well behaved from what she was before. I take her to work with me and at stores and etc and she sit on my shoulder even on car rides. I rarely use a carrier unless really cold outside. Even through she fully free flight trained I harness trained her as well for public as she use to fly off to get to something of interest, so harness trained her and took me only 2 days that how quick they learn. The first day was hard as she would hiss at me and at the harness arguing at bluff biting, but won't bite, but pretend she would to try to scare me, I would just give her a few minute break and try again till she allow it over her head and on second day she realized it meant going outside, so she accepted it and now will even lift her wing and help me put it on her. Cooper was same day and didn't give me a hard time at all, as he likely was harnessed trained at some point. Don't really need it for him as he stay on shoulder when out in public and don't just fly off like Baby does at time. He put his head up and bounce to let me know when he wants to fly. Someone at some point flight trained him and other training as I didn't really have to, to come think about it, didn't really had to train him at all, he was even potty trained and would wait till I got out of car and step off shoulder and poo. Baby it took me about a year.
Before meeting baby I was looking to adopt a African grey from a rescue I was working at the time, I wasn't even thinking about a cockatoo as know how aggressive they usually are. Now I have 3 of them over the 3 to 4 years since getting Baby. Cooper is my rescue. He was a rescue as he plucked most of his feather out and in bad health with liver issues and infections as they kept him in a dirty rusted small cage with sunflower seeds in back of a garage as they didn't want the noise inside their house. Likely second owner, or bird flipper as he was professional trained at some point and was very social off the bat. He cost me over 2k in vet bills in the first year and tons of bonding to get him back to 100%. He since molted most his feathers back, fully flighted and has fully recovered and even mated to my female U2 as now they are a pair. That I was surprised as Baby is picky and usually don't get along well with other birds, I actually kept her separated for the first couple of months, she accepted his bonding request first time around from meeting him and then they started to mate shortly and a year later inseparable as if I pick up one, I have to pick them both up within a few minutes, or they fly and call out to each other.
https://youtu.be/Jsxc848Rasc?t=57
Cockatoos in general is like owning a primate, they are not the bird for faint of heart and a large lifetime commitment.