Pressuring a partner to have sex will, over time, poison the relationship. Similarly, if someone acquiesces to sex they don’t want, over and over, that will poison the relationship, too.
Men should stop doing the first, and women should stop doing the second.
And by the way, no one “needs” sex a certain amount every week (or month or year). Some people WANT it much more frequently than they have it–but that’s NOT the same…