How to fix option button

Hi everyone!

I dropped my PS5 controller and the options (start on older Playstations) button stopped working. I opened up my controller and found that the actual 'button', not sure what the technical term is, is missing now. As you can see in the photo, there should be a button where I've circled in red, and circled in black is the share 'button'- which is the part I need... Does anyone know if I can buy this part from somewhere, and would I just need to solder it on? I'm even thinking of ripping it off the share button which I never use anyway :D