Hmmh. I think the ACS712 or something similar would do. Or a power clamp around a wire. Just make sure you know what you're doing when messing around with mains voltage. I mean most people just buy something like a Shelly. They also have variants with 2 relais. Or a smart multi-outlet power strip. There's many options to buy. You'd have to do some extra step and look up the microcontroller in the Tasmota database, but there should be 4-outlet smart outlets including power monitoring with an ESP inside. The cheap ones seem to be around 35-45€. Tinkering with mains voltage and wanting it all exposed is a bit of a niche, I don't know if there's many PCBs out there. That's mostly cheap boards with just the relais.