Firstly I think it is a bit of a manosphere trope that women are all being unreasonable in what they seek in a man and that if only we lowered our standards we would find a man. Men like that think women are all seeking a man who is 6 foot 2, earns £100,000 a year, is fit, handsome, full head of hair, owns his own home etc. When to most women their standards are more like is kind, treats her with respect, is reliable, does his fair share of domestic chores, doesn't have issues with substance abuse, gambling, porn addiction. Isn't abusive or a cheater and isn't a liability i.e. not in masses of debt or is unstable in their behaviour. Things like being attracted to the man, being compatible, or him being solvent and gainfully employed are also good but that isn't the same as demanding an Adonis with millions of pounds. So what most women what is the basics and the truth is so many men can't even manage that bare minimum standard of behaviour.
Rather than admit to their own deficiencies men then like to say women are being unreasonable and that they all want only the best men.
I am married now but in my single years I dated 11 men. Out of those 11 men, 6 of them, more than half were not really good men at all, toxic really and would never make any woman a good partner all of them had issues which were at first not apparent but serious impediments to a life together; commitment phobic, substance abuse, abusive to me, selfish and spineless, users, lazy and so on. These men are still single now.
Two were not awful but suffered from some kind of instability which made them not bad people but not someone I would want to be married to. Two were decent men but just not right for me at that time. All these men are now married.
Out of these 11 men I dated only one was good enough for me to say yes to when he asked me to marry him. Only one was a decent man with no serious issues, who I was attracted to, compatible with and who wouldn't be a liability. He's a human being so not perfect but he is a good man and I totally fell in love for the first time in my life when I met and got to know him.
I had received proposals from earlier boyfriends but I knew deep down I wouldn't be happy in the marriage and I ended things. I waited for the right person for me and I'm very glad I did. I think it is better to be single than stuck in a marriage with a man who has issues and makes your life harder.
Interestingly the longer I went on dating and the higher I raised the bar the closer and closer I got to my ideal man the last two men I dated before DH were both good men just not right for me then I met DH and knew very quickly he was the one.