I get rejected because of my looks ,height and inability to give heavy dowry for marriage even by practising muslim families. i am 23 already . i am tired of hearing all types of comments about me by my extended family. No matter how hard i try to avoid i get sad .i have started feeling like a burden to my family. What i should do now sheikh?
You must have complete trust and reliance on Allah that whatever He does is for your own good. There might be khair in what happened when these people rejected you, they were not good enough for you.
Make dua during times of acceptance, such as in salah in your sujood, in the last tashahud, before making salam, between Azaan and iqama, during the last third of the night, begging Allah until He opens the door and answers your dua.
Learn how to have thick skin and pay no attention to what people say nor react to it. This will kill them slowly for failing to depress you and have you defend yourself.