I repaired my DualSense R2 trigger using springs from an old DualShock : r/playstation
How To Fix R2,L2 - Trigger That's Too Loose, Dualsense PS5 Controller. - YouTube
R2 and L2 button set DualSense Controller (PlayStation 5) repair - Free guide - SOSav
Quick and simple repair for PS5 pad triggers R2/L2 on a budget - YouTube
Thumb Grips Trigger Kit for PS5 DualSense Wireless Controller, EEEkit Anti Slip Silicone Analog Stick Thumb Grips Set with L2 R2 Trigger Extenders for Playstation 5 Controller - Walmart.com
Dualsense Replacement Buttons | Face Button Thumbsticks Set | L2 R2 Trigger Button Ps5 - Accessories - Aliexpress
Playstation 5 Controller Accessories | Playstation 5 Controller Button Kit - Sony - Aliexpress
Amazon.com: Asokex L2 R2 Trigger Extenders for Ps5 DualSense Controller with 8pcs Joystick Caps : Video Games