It's great if you get some sort of shiny job like that right out of the gate. But for most people, their job-related positive impact on the world comes on top of some years of experience.
If you don't get the shiny job right off, enjoy the normal job, learn about your field, the world and yourself. Take the long view, and enjoy the days. Eventually you'll focus on what you want to contribute, rather than the needs of some particular early employer.
It'll be fine.
Does either of your side projects solve a real problem that people have?
If not, look for some sort of frustrating inefficiency that you or your friends at school run into all the time. Then build a solution.
The first thing right here is to realize you are putting yourself under way too much pressure. The world doesn't work like that.
Enjoy your summer. Go on lots of hikes and enjoy every moment you can.