I've done it, although not remotely.
If you're looking at working remotely, then you probably want to look at which organisations you're planning to apply to and see what they require in terms of qualifications.
If you're looking to find freelance clients (students) then it probably doesn't matter which course you do - IME most people searching for a language course aren't experts in what qualifications are good or not. But it might be harder to be competitive among other freelance remote teachers if they have qualifications and experience you don't.
In terms of which courses are worth the money - Cambridge CELTA and Trinity TESOL. Anything called TEFL is (most likely) a load of generic rubbish. It won't harm you but it might be a waste of money. The content of CELTA and TESOL are really solid and will stand you in good stead, although they must be tricky to do remotely.
For actual work abroad, IME/what I've heard from other EFL teachers is that Asia tends to want a degree, they are less fussed about the language teaching qualification. European schools tend to want CELTA or TESOL, but a few don't care and will hire you because you're a native speaker. I have CELTA, but my last school was like this - they never asked to see it. These schools have typically favoured UK citizens because it was EU, but post Brexit, that probably isn't valid any more so you'll be in competition with Americans, Australians, Canadians etc.
A generic "TEFL qualification" won't qualify you to work anywhere by itself. You'll also need the native fluency and sometimes a degree.
Once you have some experience - remote or IRL - you are more employable, as with anything.