Find a Ps4 Scuf button. Where can I get it from. Either in a set with a Scuf Remapper but cheap or individually, thank you. Can also be a completely different button with the same size.
Conrad Electronics. Costs almost nothing
https://www.pollin.de/p/printtaster-mikro-eingabetaster-420035
https://www.conrad.de/de/p/te-connectivity-1825910-2-drucktaster-24-v-dc-0-05-a-1-x-aus-ein-tastend-1-st-701749.html
Conrad, Völkner, Mainfunk.
It will be difficult to recommend because I don't know exactly what you need. Is that a switch, so press once on, press again off. Or is it a button, break contact / make contact.
I'll google it right after dinner to see if I can find something about it.
You have to search under the term "push button".
https://www.conrad.de/de/search.html?search=drucktaster%20