There is nothing wrong with your (corrected) sentence, but I think we are more likely to say, "... to hold a girl's hand' or '... to take a girl by the hand'.
Preferring your sentence because you can show that it is more natural or more grammatically correct would be fine, but to prefer your sentence to that of a native English speaker just because the native speaker's version "looks just a little bit strange" to you is not a good way to improve your English!
If you're going to ignore our advice you might as well not bother asking for it.
A better title would have been I'm too scared to take a girl's hand.
Thread titles should include all or part of the word/phrase being discussed. (Avoid phrases like "HELP!", "Urgent!", "translation please", "how do I say this", "I'm new" and similar expressions.)