I'll answer the questions as I can and tag the people that I am answering
Son ov Timett Yeah I drive and Im certainly down for some casuals anytime bud
ERR0R MACR0 Casting in pvp is extremely risky in regards to actually using spells that cast.
Area of effect spells are the only real useful ones. I reccomend you try something like this. Do not lock on with spells. Bait people. If you notice the guy you're against likes to try and get in your face as you cast or even tries to roll stab you to punish (that is roll behind you as you are casting)
Unlock your camera. Aim with the left control stick. That is the best advice I could ever give a caster in PvP. Many of us who took the time to learn can aim spells and bow without locking on and hit constantly from distances.
LETHAL LEGEND You bad
EGP Wonder_Chef Your build in regards to stat allocation is 100% fine. My strength build actually has almost those exact same stats.
Since you mentioned a lot of giant weapons I assume you went pure strength. For pure strength the demons greataxe cannot be surpassed in damage. It has the highest damage in this game of any weapon. Man Serpent Greatsword is the best (in my opinion) for a pure strength build. It's scaling is insane and its swing speed is beautiful.
That said I can make some minor reccomendations that you may be interested in. Instead of dropping a pure strength build in PvP (pure str builds are slightly weaker to dex and mix builds) try a heavy weapon with dex/str mix. The claymore for example you may like, its a greatsword that swings identically to MSGS on the R1. However, the claymores 2handed r2 is the best attack in this game and its one handed r2 is great for pokes.
With 40 str and 40 dex on a +15 claymore I think (I havent played in a bit so my exact numbers are off) is somewhere around 560 damage. PURE. Not mixed with an element. Pure physical damage, and physical damage is the lowest defense anyone has in pvp.
If you want me to go into the details of reasoning behind why the weapons are good I certainly will