Then you follow the procedure outlined in article 5 to amend the Constitution.

That is much easier said than done.

It’s 2020 and we still don’t have a gender equality amendment even though the majority of states want one.

...let alone amendments for healthcare as a right, abortion rights, and proportional representation.

It's supposed to be hard. That's the point. You have to get an absolutely overwhelming majority before you can change a the source code.

Are gender equality laws prohibited by the Constitution? Title IX shows no.

The issue isn’t that there’s a difficulty in creating gender-equality laws, but that the opposite is true: it’s just as straightforward for a legislature somewhere to enact misogynistic laws. A constitutional amendment to recognise gender equality would mean US laws like these could be struck-down or never get enacted in the first place: https://www.globalcitizen.org/en/content/sexist-laws-in-the-...

At this point that's effectively impossible. To the point where I don't think that's really a viable solution to America's problems.