I want to confess, will texting make her feel that I am not sincere enough?

Invite her to dinner and take a walk after dinner (if she wants to have dinner and take a walk with you, it's half the battle) ~ ~ ~

Texting is insincere, I can't see her expression. ......

But if you have no confidence in yourself, texting is also a way. She can't see your expression, and being rejected can be said to be a joke ~ ~ ~

I don't think it's necessary to hint. You can continue to text her as usual, pay more attention to her, or call her. Be nice to her actively, without implying that she knows ~ ~

What do you mean you can't wait? Relax, young man! Take your time with this kind of thing, you can't eat hot tofu if you are impatient ~ ~