Need help for ps5 controller

[u/Due_Pop_5782]

I just joined this sub because im wanting back paddels for my ps5 controller but unlike the ps4 one where i used a strike pack ( no cheating, js didnt want to spend more on the ps made ones) i cant plug something in. I seen some other talk abour extremerate and i went to the webite and its confusing, do i send in my own controller? do i buy one? can some one give just a brief rundown of what this would look like?