GPA is not particularly high? How much is it exactly? If the GPA is not high, you can apply for a university with a slightly lower ranking. These universities also have good majors!

Also, how old are you now? Is there time to rebuild? If it is in time, of course, I suggest that you can rebuild it!

Another way is that you have the advantage of publishing papers in core journals or participating in major scientific research projects, so it will be much easier to apply!