davidd's A DOLL A DAY 2024

[Alliecat]

Hahahahahaha, 16,000!!   
As soon as I read "grainy" I thought to suggest you reduce the ISO, and then read further.  Yeah, that'll do it 
Sorry I can't help you with the card reader.  I have Pentax software that gets the photos off both cameras.  Anything helpful if you google something like "computer doesn't recognize card" or ...?
1/5 is way too slow to hand-hold.  (I'm not sure if you were kidding about doing it.)  Standard guideline is 1/focal length.  So if you had a 50mm lens you wouldn't want to hand-hold below 1/50.  200mm lens, minimum hand-held speed is 1/200.  Of course some people are reeeeealllly steady; I've got away with 1/8 on mid-range lenses, but I'm sure if you blew them up they wouldn't be that sharp.
I prefer to use 200 or 400.  If I'm outside and it's getting dim and I'm being lazy (i.e. no tripod) I might go to 800, but yeah, if you want fine detail on faces that starts to get fuzzy.  If I'm shooting light-painted stuff in the dark I usually go right down to 200 (the slowest it will give me) so I can have lots of time to play with the flashlight.
200/400 should be fine for you in your nice sunny outdoor pix.  Inside.... get a tripod.  Even a wee one.

A lot of (mostly very young) people made, and continue to make, buckets of money, millions, providing content for online platforms,....

Uggghhh... maybe that's why the young fellow I saw on "Renovation Aloha" tonight had $3.8 million CASH to drop on the featured house?? 
I'm sure it must be very hard putting in all that time and effort stressing over whether a bunch of strangers "like" what you post online.  Life is tough (eyeroll).
Having zero interest in "social media influencers", I'd have minus interest in reading about them, but the diversity of book tastes on the forums is often entertaining.