Do not try to print this. I've done button interface design in prints before. There is a ton of actual engineering in that pad. The shape is tuned beyond the scope of anything a hobby printer is capable of functionally recreating in resolution even with resin printers. When I tried making my own buttons and button actuators, I learned this the hard way. Even the textures are super important.
When you mess with this, you will find that the tiniest of inconsistencies will be extremely frustrating because your brain expects the timing of button pushes to be the same for each direction, and rolling motions to be the same in different directions.
If you can't find replacement parts, then look for someone selling a for-parts broken model elsewhere or cut your losses. You'll save more money that way.
Alternatively, drill a hole in the center. Then mate up the two halves. In the plumbing section of a big box home improvement store you will find ABS cement. This is more than a glue or epoxy. There is no telling if this is fully ABS, or PC-ABS. It might say somewhere but probably not on the buttons. If it is ABS and you use cement the bond will be chemical and not just mechanical. I would not do this unless I have very good control over the potential mess, and as a last resort.