“A majority of single Christians are rejecting biblical doctrine by choosing to have sex before they are married. Sixty-one percent of self-identified Christian singles who answered a recent ChristianMingle survey said they are willing to have casual sex without being in love, while only 11 percent said they are waiting to have sex until they are married.” https://www.christianpost.com/news/christian-dating-culture-part-1-majority-of-single-christians-reject-idea-of-waiting-for-marriage-to-have-sex-114422/
While Christians would agree that sex before marriage is wrong (fornication), something has to change to help believers practically live out their faith. For one I think there is a misconception about Christian freedom and liberty. Freedom in Christ is not about seeing how close we can get to “the line” of sin without sinning, but rather it is a freedom to live rightly. Once we put our faith in Christ we can actually do things that are pleasing to God by the strength and help that the Holy Spirit provides.
For the law of the Spirit of life has set you free in Christ Jesus from the law of sin and death. -Romans 8:2
I also think Christians need to be more open and honest with each other. Encouraging and helping each other in the battle. There are temptations all around us and we all struggle with purity of the mind, heart, and action.