Also, something I'd like to add (it may seem contrary to what I said before, but it stems from the same line of thinking).

Everyone changes the world, for better or worse.

It doesn't have to be a revolution or anything, you can change the world in so many ways.

The most important thing is to be an upstanding, good person. You can change the world through community, you can help your friends out, when they are in trouble. You can help your friends through just having a good time with them. You can reflect on life with the people you love, try to offer them new perspectives. You can help random strangers. You can make inspiring art.

You can raise confident, smart children, that may change the world themselves one day, either as a parent or a caregiver or teacher.

Fundamentally, Facism is about hate and left wing ideas are about love. So we can win by just increasing empathy in the world.

For me, I believe that free software can liberate us, and also I just love to code and be a nerd. So I contribute to free software projects online, I helped my mom and a friend of mine install Linux. I helped my scouts move to Nextcloud and Jitsi.

Change is about exploring new ways to use any skills you have to make small impact, which will maybe eventually bear bigger fruit than you might have thought. And if not, then you just made your life, or maybe the life of people you love a bit better, and that's also great.

Of course, it's also great to go to demonstrations, join political orgs etc. I just found for me, that I don't have that kind of energy in me, so I focus on other things. That might also change someday.

Changing the world is mostly about your attitude on life.