I agree with all comments.
I just simply would like to add that being 30 at the time of the start of the MBA is a bit different from being 30 at the time of considering an MBA. The latter will put you at 31/32 at the time of the start of the program. Not sure which of the two better represents your case.
Although still perfectly fine to be admitted, some schools, especially US ones, might give you a harder time, and you'll have to justify extremely well why you're applying now and not before, and have very clear post-MBA goals.
European schools typically accept applicants of an older age. For instance, INSEAD and LBS age averages are about 29. IMD is about 31.
I hope this helps.
Good luck!