Your not alone in not being happy that the ability to hide the camera cut out has been removed.
There are options in the Goodlock app and it's modules to help with that.
In regards to the keyboard my Samsung keyboard is fine but have you considered using another keyboard option ?
Current Phone ~
Samsung Note 20 Ultra 5G SM-N9860_256Gb SnapDragon 865+
Samsung One Ui 3.1/ Android 11.