You're getting a bunch of joking shitpost replies, but a useful answer is that it's very common for people to become furries first and then later realize they are trans, presumably because the feelings of body dysmorphia convince you that something is mismatched between your felt sense and outward appearance, but you only nail it down as gender dysphoria later.
It's also very common for trans people to become furries. Furry conventions and meetups are a great way to exist in public without judgement. Outside of the community, you're just playing dress up, and you're anonymous. Brian from the YouTube channel Regular Car Reviews did a YouTube short that explains this pretty well.
To add on to this: if you're a "guy" still trying to feel out some really confusing feelings, playing a vixen online allows you to explore those feelings without it impacting your real life. It's the same reason it's pretty common for trans people to report preferring to play characters of their true gender in video games. It gives you a safe, low-stakes way to explore gender.
With furry especially, that particular fandom has for decades been openly and loudly supportive of LGBTQ+ people and a very very significant percentage are queer. It's a very, very safe place for exploration.