Nothing is sending people to hell.
Every human being born since Adam and Eve are condemned to hell for all eternity future (except for Christ Jesus), and our only hope is for salvation through faith in Christ.
Even for those who reject Christ, they are not condemned to hell for sexual immorality.
EVERY personal sin was paid for by Christ on the Cross. Forgiveness only comes after we face God and name our sins o Him through faith in what Chrst provided on the Cross, and hen He is just to forgive us those sins for our return into fellowship with Him.
What Christ did for us on the Cross was our Redemption. In the Old Testament redemption meant to pay the price to the Temple so that an animal could live and that man could use him. Jesus paid our redemption/sin debt so that our Eternal Father would not destroy us for having stolen His and His only prerogative as mankind’s Creator. Like that animal from whom service was required by it’s owner, or his owner might sell him as useless, we must, as St. Paul tells us, work out our salvation in fear and trembling. Redemption and salvation are two different things. Redemption was given to us for free by Jesus on the Cross. Salvation will be decided by how well we suffer our cross and keep His commandments. If we are quick to confess our sins before we die, then God will be quick to forgive us. If we don’t we will spend eternity in Hell. Once we have taken that last breath, the state of our soul at that moment will remain that way for all eternity, giving us eternal life or eternal death. We decide. We are not predestined to Hell.