model: 58PUS8545/12
Okay, so while I have no trouble mirroring my android phone to the tv, for pc it seems to be more troublesome, as I tried to connect it in various ways with no luck yet. When going to 'connect to a wireless display' settings, the tv simply won't show up in the list no matter what. In the end I succeded to connect my pc to the tv in 'devices and printers' as a 'different device', though it's not recognized as a tv (but as a an 'unknown device'). And to make things clear, my pc supports miracast and recognises other tvs, but not this one for some reason.
Also I found out along the way that the tv couldn't find not even one bluetooth device when I tried to connect it to the wireless speakers.
Any help appreciated
That's because Windows only supports Miracast displays. The TV uses the Chromecast API. You can use Chrome or Edge to mirror to the TV instead if that's what you're trying to do.