Were these IRL, or on dating sites?
If it's dating sites, that's just how online dating is. You gotta slog through until you actually find someone, and it can take forever.
But if it's actually 200 times in person without a single success, you're doing something wrong. Maybe it's how you ask, your attitude when asking, or maybe it's your personality in general, but there's one common denominator here.
"I've done everything right and no one will date me," sounds dangerously close to incel logic. If you're not sure what it is that is turning people away, maybe therapy can help.