Ambilight for retrofitting – Wifi Govee TV Led Backlight Review, Specs, Price & Photos: You can currently get the Govee Immersion Kit aka the Govee DreamView T1 for 55 to 65 inch devices from Amazon for €54.74 with the 25% voucher that you have to activate.
https://theboatyacht.com/ambilight-govee-tv-led-backlight/