Have you ever petitioned your local legislators, or even contacted them? That is a starting point. You also search out what political initiatives are local to you, what political organizations are, and you look for ones already working for things that would benefit men. Things like groups pushing for better coverage of mental health care, groups that work to get popular media to discuss mental health, and work for better media representation of mental health care. There are plenty of these, and if none seem to be working for men’s interests, since you joined, you now have a opening to present data to get them to do so, etc. Everyone who wasn’t already a public figure, when the went on youtube, was in the same position. You could look for youtubers who are already doing just this, like for real, and not just grifting manosphere stuff, and push their channel to places.
Fuck, find channels that discuss mens’ issues, and mental health, in a real way, and go push them in manosphere places.

There is a lot you can. You have to take the initiative, you have to figure out what is out there, you have to figure out how to interact with them, etc. It’s not easy.