Does anyone know who this is?

I tried reverse image searching with various scenes in the vid and haven't found this exact video or model

gonna be hard unless someone is an ass expert

gonna be hard unless someone is an ass expert

Great word choice for the start of that sentence.

my guess is Athena Evgeniadis

This is Natasha Novak. This is a video from her Instagram post from 10.03.2023.

P.S. By the way, there are plenty of videos on the site where she likes to demonstrate her shape and muscles in this way.