Hmmm... not sure if no one is answering because they haven't seen your post or because it's a really tough problem. I don't have any design answer, but I feel your pain. I'd try reposting with a more specific title. Here's a post with a pink tile problem (very different from yours but still too pink) that got lots of responses, probably because of the title.

https://www.houzz.com/discussions/what-color-scheme-to-de-emphasize-pink-clay-tile-dsvw-vd~4612382

pink is hard! personally i like dark brown & pink combo. the white vanity, mirror frame, lighting does not help what-so-ever, it compliments the pink. perhaps some of the brown tones from the counter top? good luck- this is a tuff one.

Dark sunglasses? I don't think it looks too bad. Throw a bathmat down and maybe hang a colorful shower curtain (dare I say it) and maybe a colorful toilet seat cover and you can add some different colors that way to tone down the pinks if you don't like them. Greens are the opposite colors to pink and perhaps you could use a few more green items to dilute the pink and perhaps a more neutral wall color that doesn't pick up on the reflected pink color.

How about a light grey on the walls? Pink and greys combine well.

I think you should paint/ gel stain the vanity an espresso or java brown as well as the mirror. Paint the walls a cream color (no pink undertones). Add bath mats and towels in a brown. Instead of the planters on the wall, select a nice bath theme print.

I think walls done in deep brown or charcoal, what ever the darkest color in the counter top. Mirror the whole wall above the vanity and paint the walls a deepest color in the vanity; charcoal or deep brown

Plate mirror, sconces, and dark paintd vanity

how about asking a painter to paint over the pink porcelain/ceramic tiles?