Bottom line is you can't red pill others. They have to come and seek the truth themselves. And that almost always happens when one undergoes trauma, loss, and stress (especially in relationships) to where the lies they are told fly in the face of the reality in front on them.
Just hope and pray they see the truth.
Whether in the Matrix, or in the "manosphere", the essence is to bring the person to the realization that the narrative that he has assumed to be true all this time, is built on a lie.
In the manosphere, the revealed truth is that (a very large percentage of) women will not tell you what they are really attracted to. Many do not know themselves.
The manosphere says that women innately wish to procreate with men who are genetically superior (the "Alpha" males), but also have to live with the reality that there are lots of women chasing the Alphas out there, and she has low odds of hitting the jackpot, and will eventually have to "settle" for a Beta male to be her provider.