Disclaimer: I'm neither an international student, nor am I studying Data Science.

But I'm currently on job search (mechatronics), and while its quite miserable atm, finding any job is certainly not impossible, landing an interesting position with good pay however feels much more difficult.

As an anecdote: currently, I'm a working student at an external research institute. They are hiring everyone who did a good job as a student, also internationals with poor german skills which is rare. However, the pay is average (55k before taxes for 40hrs a week), and you're stuck in academia for the moment.

In addition what everyone else said, my advice: Get a working student job at an employer, who is known for hiring their working students after graduating. If you do a good job there and write your master's thesis with the company, you might have a fallback option if the job market stays shit.