If you’re asking for help in de-confusing the tax aspects (even casually), you pretty much have to give the country.

I would recommend a local CPA, who can keep your details private and give you accurate tax advice.

Is your expectation to be given advice for every country in the world? Or is it implied that you only care about advice for the country you'll most likely receive it for (USA) in which case...why not just state that.

Ok sure. We’ll just give you tax advice and not tell you what country it pertains to.

You said you haven't found anything relevant, the quick DDG shows there's relevant information for the USA, so I wondered how you haven't found that. Either you didn't want to write down all you found, or you really weren't able to find the good keywords to search for, or the things on DDG weren't relevant to you because maybe you're not in the US (you still haven't written down the country, all hail your privacy!). I could give you links to info for 2 European countries, but hey, for my own privacy I didn't want to reveal that info if they're not relevant.

Just like you're calling me an idiot, yeah, it's easier online to assume the other side is an idiot, and that's what I did.