Note that there is an extreme selection effect in play. Vatican specifically seeks out confirming evidence for the miracles required for beatification of their favorite saint candidate. I know of no other religion that does that, at least not as extensively and systematically. Second, this process is heavily popularized in the media. Third, you, being Christian (whether Catholic or not) are even more likely to both hear about it and take it seriously.

If you simply seek out miraculous events without calling it such, odds are there will be much lower correlation between them and a saintly person being involved.

Can you give some examples of miracles you've heard?

I'm considering the God of the Bible because the miracles I've heard of are specifically Christian, and therefore either they're valid (and therefore Christianity is true) or they're invalid

That's not true. Various beliefs systems do allow for intentions to manifest paranormal effects. You can also explain quite a lot with karma.

If you search a bit you will also find that Christianity isn't the only religion or belief system that makes miracle claims. Especially when it comes to straight bible Christianity. Quite a lot of New Age folks for example believe in reincarnation with is not compatible with the standard idea that the bible proposes.