Searching for an Idle Animation

Hi so i was looking all over the place for an Idle animation that seems to pretty common but couldn’t find it.
I even asked one of the creators of one of those model but never got an response thats why im asking here.
Does anybody know where to get this:

If you could give me a link or tell me how to find it, that would actually make my day.
Thx in advance
Nuehoul