Hi Becca! When I was doing design my day consisted of meeting with clients and understanding their needs for various projects (print, web, mobile). Collaborating with co-workers and providing feedback on designs. Creating design work, making changes based on feedback and updating current designs. Collaboration and feedback is most important when creating successful pieces of work :)
Here is a video you might want to check out for more insight:
That video from Jessica is great. It's largely focused on what it's like being a freelance graphic designer.
Early in your career -- when you're more entry-level / junior -- it's common to be in-house (not a freelancer). In that role, you'll likely do more production design, meaning someone else with more experience will set a vision or direction and you'll work producing assets in Sketch, Photoshop, etc. That's almost always a good thing, because when you're less experienced, you don't necessarily want the Creative Director responsibilities.
As your career advances, as you gain more experience, as you develop more portfolio pieces, you'll experience more of the bigger picture of graphic design, like the business drivers of the project, the concepts behind the designs, etc.
(as a side note, a well-designed portfolio and strong portfolio pieces are more important than a resume).