i bought from amazon some smart plugs: https://www.amazon.de/gp/product/B07PRFGRLC aoycocr.
these are working with the smart life app and alexa integration. but all traffic is redirected to china and you need to have smart life connected to your alexa account. to get rid all of this, just flash the esp8266 inside the smart plug to a new custom firmware: tasmoto tasmoto.
we will use tuya convert, to hack the old firmware https://github.com/ct-Open-Source/tuya-convert