For the record the Sony HVL f32M doesn’t seem to have an optical flash mode in the same way the Godox does. Apparently there is long convoluted way to trigger it optically if your Sony has a built in flash which can send some pulse that gets the Sony to fire optically but even then it doesn’t sound like it very reliable.
Maybe I'm interpreting it wrong but according to the Sony specifications it seems to be ONLY optical... See here
Sony
It looks like Sony Wireless Flash protocol can use pluses of light or radio signals to communicate. So that’s what Sony means. It can’t be used as an optical slave like the Godox can.
If you had another Sony flash to be the master or as Sony calls it the “CTRL” you could use that on camera to control the off camera Sony flash. it even sounds like Godox flashes with multi interface shoe are supposed to be able to trigger Sony flashes off camera (Note I just tried for an hour to get this to work and couldn’t) however, your Lux doesn’t have this functionality.
My advice would be to either always use the Sony on camera or to cut your loses with the Sony flash and just go all Godox stuff. Frankly, the Sony off camera flash system is just terrible.
Here’s the most complete explanation of the Sony wireless flash system I have seen to date but frankly this is just way too complicated.
https://support.d-imaging.sony.co.jp/support/acc/flash/en/wireless/setup.html