You’re right, going for asphixation is more dangerous than many folks assume, especially since it has become quite normalized through porn. Most porn scenes and I assume most more vanilla folks at home don’t restrict blood flow, they just put their hands on the neck without much pressure for the feeling of domination.
If you still want to engage in actual breath play… There are good resources on the risks and different techniques of choking and breath play out there, don’t put actual pressure on a persons neck without informing yourself and talking about the risks. One variation is to instruct a person to hold their own breath once you touch their neck, so you still are only simulating a choke without actually putting pressure on the neck.
If the model is not known it’s harder to verify if it’s NCIS aka “revenge porn”. It’s also shitty to share material without giving credit, presumably the model is living off their work.
Neither tineye nor GIS is finding any matches for this images, which is kind of suspicious. It might be a still from a video, but GIS could potentially still match it then.