There are two flaws in that argument:
Firstly, you're assuming there's SOMETHING a sub3 man can do to "become" attractive. It's not something you DO, it's something you ARE (attractive, tall, young). Unless you're a borderlinecel that can be fixed through looksmaxxing (example: you're ok looking except for your ears, gets surgery and enters a looks tier where you are somewhat competitive), there's nothing you can do.
Secondly, the looks match/Juggernaut effect reality. Your looks match doesn't need to put any effort whatsoever and her SMV still trumps yours hands down and she'd reject you in favor of better looking men available to her thanks to higher male sex drive/Juggernaut law.