Praise be to Allah.
If you want to get married, then look for one who is religious, as the Prophet (peace and blessings of Allaah be upon him) advised when he said: “Choose the one who is religious, may your hands be rubbed with dust [i.e., may you prosper].” There is no reason why a man should not also look for other things, such as beauty etc., that will help him to keep his gaze lowered. This is something which should be taken into account. Hence the Prophet (peace and blessings of Allaah be upon him) mentioned it when he said, “Women may be married for four things” – and he mentioned beauty as one of them. If you are afraid that you may treat this woman badly because you do not find her attractive, then do not go ahead and marry her. And Allaah knows best.