Islam strictly forbids seeing porn, naked images and namahrams. If we follow this totally and stay away from it, our minds starts to forget all that things but science says we should maintain our sex life other wise man will losse his sex power. As for the youth, what can they do in this case because married couple has no problem in this issue but unmarried, what they have to do if they stay away from porn or naked images? They’ll lose their sex power but if they stay connected to it then it is haram to watch. What Islam suggest about this and what if marrying early is not possible to solve the problem

Science says? Who is science? You need to provide evidence and research to make such a claim. Because this claim is false. On the contrary one must preoccupy themselves with other things to remove these thoughts. They must endeavour to get married as soon as possible to unleash their desires.
It is forbidden to view pornography, you won’t lose your libido don’t worry, it will be put hold.
How do we maintain a good sex life? Through marriage, permanent or temporary.