Doing bad in a course

So basically I picked a course but I ended up hating it. Only chose it cause it was a “bird course” but I hate the content and im dumber than almost everyone there . I chose not to drop it because it was almost impossible for me to fail. But now im barely at a 70% and will probably drop to just above 50, since I’ll almost certainly fail the final exam. Is it a big deal for my gpa moving forward. I’m still not 100% how gpa works.