1. Chivalry was actual a battle code, and had little to do with women
2. What you're talking about is "courtship" a set of rules, written by women, about how men are supposed to act around them to gain their favor (favor defined as vaginas)
3. "courtship" was an unwritten social contract for BOTH sexes. Ergo a man acted like a gentleman to win the favor of a lady. HOWEVER, it required women to ACT LIKE A GODDAMN LADY.
4. Acting like a goddamn lady includes not taking nude selfies, not being a slut, and realizing that you're not a man's equal and you need his protection because he possesses, at all times, the physical capability to take what he wants from you (yes, rape).
5. Modern, slutty, women have broken this social contract by virtue (or lack therefore) of their sluttiness, and push for equality. Therefore men are no longer beholden to it.
So where are the chivalrous men? They're lying atop the dustbin of history. Although, sadly, their are some idiots who still hold to their half of the bargain while women REFUSE to hold to theirs. We call these men betas. They're so pathetically ego-invested in chivalry that they can't see that it's null and void.
Sounds like your'e one of them...or you're a lady who desperately wants men to hold their half of the bargain up because it's hella-advantegeous to you.