Hey there, first off I wanna say that you being a highschooler having found this place and being interested in communism at all is fucking fantastic. I was an ignorant jerk in highschool so you're miles ahead of where I was. That said, being more politically inclined makes it so much harder to cope sometimes, I feel.
My only advice is to try and become invested in your own community. There is so little we can do individually to effect change on a large scale. Being constantly bombarded with the news and fear mongering makes me want to hide in a cave. I do also get anxious about Trump. I know ultimately the machine will grind people down the same, Democrat or republican...but the reality of it right now just feels horrible. BUT, we do have the ability to make a difference in our own communities and that can make things feel a little less bleak when you're around people who care.
Are there any opportunities in your community to volunteer? Feeding or handing out cold weather gear to the homeless, trash pick up, communist reading groups, even a punk community? Often in punk communities there is a political element. May lean more anarchist but you might find comrades; a lot of all ages shows are thrown around my town and there are often benefit shows and people who do cool things for the larger community.
It's terrifying right now, I know, but you'll figure out what you need to do. Love & solidarity