Etiquettes of Dua

Q: I am very sad, worried, depressed and lost. I'm doing everything to please Allah but nothing is working out in my life.

I read 125000 times ayate kareema alone in almost 4 months only asing Allah to wipe off my sins and also give shifa from those diseases which came through my sins. I'm badly affected by impotency, premature ejaculation and everything.

I am daily reading minimum 1500 times astagfirullah,
100 times 7 powerful ayat from Quran i.e. La ilaha illa anta subhanaka inni kuntu minnazAlimeen.
Subhannallahi wabi hamdihi subhanallahil azeem
And other 5 known and powerful ayats.
And also min 500 durood shareef

I'm reading this for last 5 year wihout skipping a single day. I'm honestly reading this for Allah forginess and also to get shifa for my many diseases. I am now becoming hope less and don't see any future for myself. Please advise what I'm missing or doing that Allah is not even listening.

Q: Is it permissible to make dua with a gap between the hands?

Q: If the husband tells his wife, “Do not ask this from Allah Ta'ala in dua.” But the wife really wants to ask that from Allah Ta'ala. If she makes the dua, will she be sinning? It is a halal dua.

Q: Is it permissible in Islam to make dua to Allah Ta'ala to bless us with more wealth than someone else because they are competing with us in everything? The intention is not for their wealth to decrease, just for us to have more wealth than them.

Q: In nafl salaah, can I read Quraanic duas in sajdah?

Q: I wanted to know that must every Muslim speak in Arabic or make dua only in Arabic. I read Qur'an in English transliteration of Arabic, so is it right to do or not?

Q: Could Mufti Saab please tell me wheather one should wipe the hands on the face after dua. What is the reason that we do this?

Q:

1. Are Duas accepted yes or no - my answer would be 1) Its answered now 2) It may be answered in future 3) You will get it answered in Hereafter. 
2. What about statements (ahadeeth) ALLAH has forgiven and made you enter jannah and saved you from Hell.  Its like Jesus pbuh dying on cross or something a little like that.  

Q: Imam Waqidi mentions that a sahabi in Qadisiyya made duaa for Allah's help by looking up to sky and palms facing down. Translator (Mol Kindi Sb) says this is forgotten sunnah. So what exactly is Sunnah method? should one stand with hand to sides as if in quamah after ruku with palms down and look up asking Allah's help in situation?