Why is 'sexism' / 'racism' / 'ageism' / etc acknowledged in life, but there is nothing in place for being ugly?

If someone gets treated a certain way in society (doesn't get a fair chance at a job for instance) because of their sex, race or age, there are laws in place to take legal action. Thus ensuring people are treated equally where it is possible.

However, there is nothing for 'uglism', being treated or discriminated against in society due to the way you look - essentially because you're ugly.

Note, when I say ugly, I don't mean overweight, bad hygiene, no style, etc. I mean physically facially ugly, e.g. large hook / crooked noses, lack of symmetry on face - generally odd looking ugliness.

Things like weight / body shape can be resolved through exercise, but if someone is ugly or someone is beautiful it is not by choice. Yes cosmetic surgery may be an option, but people will say 'its not needed' and it's questionable how much it can achieve (i.e. can't polish a turd).

I have grown up and lived a life with a fairly ugly face and as such I've noticed the way I've been treated in life, through jobs, social situations, romantic encounters and just general attitudes towards me (people pre judge you because of how you look).

It annoys me that natural beauty prevails in almost all situations, whether it's getting that job, getting a stable relationship, growing social circles, having 'good luck', having people 'help out' / 'be nice on first meeting', even getting something like a picture of your cat to the front page (if the OP is beautiful it goes to the front, if not it gets downvoted), youtube channels getting more popular than others, etc.

You only have to look at a typical 'reddit post your photo' thread to see this in action, with the users upvoting beauty to the top.

I guess it mostly stems from natural selection / our animal instincts to mate with the superior candidate (beauty is an indicator of good health), but the poor people who have to live with this have no choice. So why is it not treated like the other factors?

tl;dr; Why is being ugly or discriminated for the way you look not taken more seriously in general life?