No it isn’t. Everyone gets rejected. It means nothing. Most people get more rejections than acceptances because that’s just how it is. Everyone is picky.
Most people find someone eventually. Even someone extremely attractive will get rejected, multiple times because what’s the alternative? The kind of enforced shagging that troons expect. Not everyone fancies everyone else. I’ve rejected and been rejected by plenty of decent people, they just didn’t fancy me and I didn’t fancy them. That’s all there is.
A polite rejection should be met with a shrug and ‘thats life.’ If you have a basic degree of respect for women, wash and hold down a semblance of a stable life, you’ll eventually find one who will gladly jump you. Just don’t put them on a pedestal or demonise them, just treat them like humans. Some of us are shitty and mean, just like men. That’s also life.
16-17 is no age - honestly, anyone who laughs at a 16yo virgin is a pillock. Relax, enjoy your youth, ease up on the angst, it’s not personal, and one day you’ll find a nice girl. It will all be well. Don’t turn into a bitter woman hater just because a girl said no. Most of them will, and a few of them won’t. This happens to everyone.