how do i make myself look not straight?

I have had a reoccurring issue of me telling someone new that i’m bi and they proceed to exclaim in surprise because they ‘never would’ve thought’ it. I don’t understand how this happens because my friends who have known me before i came out have told me it was kinda obvious so naturally, I should come off as not straight to strangers even more so now that i’m out, right? How do i fix this, i want to be able to seem approachable to girls.

A little about myself if the context might be needed: - 5’4, shoulder length hair, big black glasses - rings on 6/10 fingers, painted short nails half of the time - outfit rotation consists of: baggy pants+tees, adidas sambas, converse (2000s HS boy vibe) but when i feel feminine, crop tops, flared pants, muscle tees, bright colors (like regina george or smth)

I usually switch between masculine and feminine dress, never being too much of one or the other for too long or else i feel weird idk. I literally be like “i’ve been dressing like a girl/guy too much recently” and switch how i dress for the near future. My most common outfit combo is probably crop top + baggy jeans (honestly might be why people think i’m straight) BUT THAT’s ONLY LIKE 35% OF THE TIMEEEE

Maybe I can get a face piercing? I have only 1 of my lobes for each ear. Please help guys.