This may seem like not the thing to say.
When I was Pg and had perinatal anxiety and depression that wasn't identified at the time.
I felt unable to ask for a seat etc. And I was in a bad way with anxiety so much even though tried to hide it, it was obvious things weren't right to anyone who looked.
Those who helped me- by saying with no prompting can anyone give her a seat, standing immediately if they had one, once stopping a car to ask if I was ok when having a panic attack, helping me up when I tripped, that sort of thing.
There was one nun.
Loads of black men and women including young/ teens. Most often blokes. In front of their mates!
Also other minority groups more men.
White was women. Generally older and I suppose know how it feels?
Journey into canary wharf in rush hour. Suited booted well paid often young. Never.
When I was having a panic attack by the side of the road it was a black woman who parked her car up the road and walked back to see if I was ok.
I don't know how this post will go down.
Chivalry towards certain people. Ladies in your workplace etc.
Is just nothing in the face of generally looking out for others. Whoever and wherever you come across someone who seems to be struggling.
And IME (as a person from London lots of diversity) it's the white men with the good jobs who do all their doors etc at work. That are the last people to do anything otherwise.
This is just my experience and where I live.
I am sure in places less crowded and smaller that it's totally different and white men etc will help happily. In fact I know it.
But when it's so many strangers, you'll never see again, trying to get a space/ seat/ modicum of comfort. IME it's very stark the way it seems to go.