not everyone gets in....that's the reality of a competitive field. But, there's no law that says you can't reapply next year. I know a few people who didn't get in the first, or even second time, but they kept applying and finally got accepted. But, usually they had to retake a few classes that they didn't do as well in the first time around to boost their GPA a bit, or maybe get more observation hours in, etc. It's definitely possible though 🙂
If you don't get in this year, take the year to work and save up some money, and do some things to make your application stronger if you can - extra observation, retaking a course, etc. Or, you can do something you've always wanted to do (travel overseas, take a roadtrip, etc.). There's always another chance to get in.