Societies, societies and more societies.
If you don’t know anyone, best to meet people with the same interests as you, best thing is you can meet people outside of your course too!
Freshers is also a great time to meet people, so whilst its going, take advantage.
Also, I don’t know what uni you’re attending but my uni (UWE) when I attended helped its pupils by having cooking classes to help new students with easy cooking/budget cooking recipes.