Haha. Brutal question. I don't even know if I can count...
Big secret: There are no real stages. We didn't just have a seed, Series A, Series B, etc. And, that's the story for most companies. There are oftentimes intermittent rounds, that you can call bridge rounds or just financings. We had three times where people put in more money, sometimes a little, sometimes a huge amount, that aren't technically called anything. These intermittent financing are especially common in the early days.
I just searched my email for "sit this one out", "going to pass", "won't get there", "not the right fit", and "not going to get to the finish line", and I think we're at 200+.
Maintain good relationships with all investors, especially those that reject you.
Treat every funding like your last. Be thrifty and try to make revenue, and ultimately profit, as soon as possible. It will at worst extend your runway and at very best help you avoid the need to fundraise anymore at all. The goal is not to raise money, the goal is to build a standalone bad ass business.
That said, when fundraising, keep going and remember: it only takes one yes.
