it is easy to be lost in the freshman year, you are in a completely different environment, new people, new routines, challenging classes so do not put too much pressure on yourself in terms of what you have to do or not in your first year - you will have enough time to do that later.
Having said this, if you have time and energy, I recommend to search for international groups or organizations where you can join.
I entered two organizations towards the end of my freshman year and they gave me the chance to travel around Europe, get to meet people from all over the world, open my mind, see new perspectives, learn about different cultures, etc. Having the international exposure made me decide that I would like to go abroad for an exchange programm and continue my Master studies abroad as well, so I certainly benefited a lot from this experience.
Best of luck!