Please help me convince myself

I'll keep it short, I don't want to waste anyone's time.

Here's the thing: I know I (18m) am not trans. I know the only reason I want to be trans, be a girl is to be prettier just because I'm insecure, I don't have any dysphoria, I'd say I look...okay in a mirror, I don't have depressive moments not... like my life is going well.

These last month I've been consciously and subconsciously trying to convince myself I am trans trying to find a proof that is definite and makes me say "see, I knew it! I am, now I have an excuse to transition". But subconsciously I know I don't want that long term, it's complicated and I just don't like I know that if I were to transition I'd just end up depressed, I've heard multiple stories even from personal friends of people transitioning just as a sort of "prettier improvement" just to regret it lateral.

The main thing here is that I would want to be trans only to transition to then be pretty, and this will probably sound transphobic but I know I won't be happy with the results, and would be just depressed about anything else because I don't care about anything else of being a woman other than appearance.

And it's not one of those "would you click the button" cz yes, I would, but that's not how life works. You don't get consequence free stuff like that...people and myself physically (also, I'm extremely antisocial and scared of interactions, today I was too embarrassed to buy shaving cream). But the main issue, would be that...yeah, usually transition doesn't make you a pretty girl, just a girl on average sorry I know I'm being transphobic, point is I know I wouldn't like the result, I have a very masculine face.

So.. to recap, help me with logical arguments that make me understand I'm not trans, please and thank you, because I can't get it out of my head.