This is a scripted video just like an advertisement. Good enough to fool foreign students.
She lives in Amersham (linkedin) and the uni is in Marylebone. The train she shows is the Elizabeth line, which doesn't go anywhere near these two locations.
Interior shot of the train is from a different train (probably metropolitan line). But she most likely travels on a Chiltern Railway train every day. She wouldn't dare post photos of those trains because they are old and in terrible condition (they are the only diesel trains running in London due to tracks that cannot be electrified).
Amersham is a sleepy old town with a few buildings. Very unlikely the gym is in Amersham. Also its far away. The farthest station on the London underground network. People only move there if they don't have money to spend on accommodation.
This is definitely a paid advertisement. Nothing more. Those who live in London can only have a good laugh at this.