My Switch is doing stuff on its own. : r/NintendoSwitch
Amazon.com: 【August 2021 Newly Updated Version】 PS4 Controller with 3 Programmable Back Buttons and 1 Sensitivity-Control Back Button, Game Controller Remote with Turbo/Gyro/HD Dual Vibration/Touch Panel/LED : Video Games
Amazon.com: eXtremeRate Black Real Metal Buttons (RMB) Version RISE4 Remap Kit for PS5 Controller BDM-030 040 with Rubberized Grip Redesigned Back Shell, Upgrade Board & 4 Back Buttons for PS5 Controller :
Amazon.com: 【2021 Upgraded Version】 Wireless P4 Controller with 3 Programmable Back Buttons and 1 Sensitivity-Control Back Button, Game Controller Remote with Turbo/Gyro/HD Dual Vibration/Touch Panel/LED : Video Games
DualShock 4 Back Button Attachment review: small but perfectly formed | Eurogamer.net