If you think it's only an animalistic evolutionary impulse, you're probably not a good partner nor a good lover - that's what it means. It has nothing to do with who you vote for. What are you even talking about?
Work on your wounds and your baggage
Work on your social skills and ability to connect with others in a fun and engaging way
Disengage from stories that pigeon hole and disempower you, such as that you have no worth if you don't leave children as "a legacy."
Love is not a recipe; it's not a transaction. There are no one or two things you can do to be worthy of it, but you can be radically self-responsible. You can always be learning and growing. You can fall in love with life, even while you've got goals about what else you'd like to add in. You can work on dismantling the harmful aspects of masculine gender norms on your psyche and your habits.
If you're not willing to do these things, buy a sex robot. Chances are high that you bear at least 50% responsibility for the demise of your marriage. Take on your part, and learn to do better. Or sit and whine about how it's unfair that a lot of men are lonely (while pointedly ignoring that pretty much the same number of women are single and celibate) . Your call . . .