Steam Deck natively recognizes the PS3 controller. Simply plug it in via USB, wait for Steam OS to recognize it, then unplug USB cable and it will work over Bluetooth without needing
PS3 Controller Problems (easy fix for random button pushes, left analog) - YouTube
Genuine Official Sony PlayStation 3 PS3 Black Blue Red DualShock Controller OEM | eBay
Redditors I Need your help to repair a ps3 controller : r/PS3
This keeps happening randomly on my PS3. I can't press any button for a few mins when this happens. Fix? : r/playstation
DualShock 3 Repair - iFixit
Amazon.com: TJPD Wireless Game Controller with 2 Programmable Back Buttons, Compatible with PS4/PS3/iOS13.4+/PC/Android, Game Controller Remote with Turbo/Gyro/HD Dual Vibration/LED Indicator (Black) : Video Games
How to Fix PS3 Controller Random Button Pushes#PS3 Remot keypad Replace#PS3 Remote Fix# Disassembly - YouTube
Ken Umemoto's vReality: PlayStation Dualshock 3 L3 Button Fix
Ken Umemoto's vReality: PlayStation Dualshock 3 L3 Button Fix