There was another content creator, maybe it was @divnyi who would play Mozart, Bach, Chopin, etc. I thought that was funny and also much more tolerable than the screaming/growling PvP videos.
This is a bit sad. Here's how to get good at pvp (I'm not pretending to be a god at pvp but I can certainly hold my own even in 1vX).
For damage, the best stat is penetration so you should use a sharpened maul (this isn't always the best but most of the time it is). The second best stat is weapon damage but it also increases your healing done so it's actually one of the most useful stats. To increase weapon damage, use the warrior mundus stone as well as infused pieces of jewelry with weapon damage enchants (generally you want at least 2 jewelry pieces like this, the 3rd one could have a reduce skill cost enchant for sustain, especially since it halves the cost of cinder storm). Using this alone would make you able to deal some real damage.
For defense, the best way not to take damage is to not get hit. Use race against time, the best mobility tool available on dk and try to play around pillars and walls to prevent enemies from hitting you in the first place. You also need major resolve, you can get this from volatile armor (replace Igneous shield, a terrible pvp skill, with volatile armor). For good sustain, use jewels of misrule, one of the best buff foods in pvp while being pretty cheap.
As for the best sets available for dk, you want good ult generation to get the most out of the battle roar passive. The monster set should then be bloodspawn. You should use an ice staff or a shield of daedric trickery on the back bar. Since the effects of this set still work on your front bar if you have activated it from the back bar (the proc condition is dealing damage, wich basically means that swapping to your back bar every 7 sec is enough) you won't have to equip a maul of daedric trickery on your front bar, giving you 2 extra gear slots. For your front bar, there are many choices of offensive sets : essence thief, order's wrath, ( rallying cry?), plaguebreak...
You seem to have too much health, 30k is enough IMO. You should use those precious enchantment slots to increase your mag/stam pool for more abilities to use in a panic situation.
Also the best way to improve is to use better music, I recommend dagothwave, 55 Tage in Peking or this one https://www.youtube.com
/watch?v=dQw4w9WgXcQ
I agree with the above, bloodspawn, like yesterday, and start maintaining major resolve yourself. I suggest a more metered approach however. Do that and get used to it, then switch out fortified brass for a damage set.
Really though the music is key, this should do you right...