Clothing for Men

Q: I have watched a YouTube video saying that the sunnah dress code for males is the dress code of the time. Is this correct? 

Q: Is it permissible to wear a tie?

Q: I heard that our pants/trousers/shalwaar/jeans/etc. should always be above the ankles. What if I normally follow this thing but when I go to work or college and because of what people will say, for sometime I dont follow it and once I feel they are not watching me I follow it again, is it a sin? 

Q: What kind of dress should a man wear? Is it permissible to wear t-shirt coat and shirt?

Q: Can men wear clothes made of artificial silk fabric?

Q: Is it sinful for a male to keep his fringe a little out while wearing a topi?

Q: Is it Sunnah for males to wear a kurta? Can men wear casual clothing or unisex clothing?

Q: Can I wwear a sherwani which has brocade work on it? (Brocade is a class of richly decorative shuttle-woven fabrics, often made in colored silks and with or without gold and silver threads).

I already purchased it and its hard to return. I asked the worker if it contains silk, he told me that it doesn't contain silk. Can I wear it on my nikaah? 

Q: Nabi (Sallallahu Alaihi Wasallam) used to wear ammamah and it can be any cloth wrapped on head? It is not specific to Indian pagri or Saudi sughra? Like the Arab sughra or like wearing kufi and then placing a cloth on it like what imams of haram wear is sunah?

Q: Why are women said to wear burkha but men aren't. And how should a Muslim man dress? And like if I like a sweat shirt am I allowed to wear because the sweat shirt(not body tight) can look good and still attract the opposite gender. So is that permissible in Islam, to wear nice clothing?