Agree with others, but for the sake of this sentence will add…How about interning with your state senator or assembleymember? My D did that in high school and found it quite rewarding. How about your city council? Sometimes they have various committees where (non-elected) members of the public can serve - such as social justice committee, arts committee, transportation committee, etc. You could see if there are any city committees you can serve on to learn more about the workings of local politics. How about volunteering with a nonprofit? Maybe there’s a local nonprofit that works with, say, refugees that would give you some interesting insights into the dynamics of international relations? If you speak a foreign language, you could help translate. Perhaps you could volunteer to help them with things to get them better settled, or perhaps you could fundraise for the organization? Just some examples. Obviously, you should do what is of interest to you and locally available.
Fully agree with this.