Need Advice for Higher Damage - Warrior

[Greatankush]

Hello,
I am a lvl41 warrior....
My str is 545

My stuff:
Icescale set tactics clean
Magmatic claymore tactics full blood
Arlorian ring will lvl41 2blood gems
Doom full blood
Pet: piggy(blue)OR scorn

My str is 545 with piggy my damage though is just 320approx
I have done that respec with scroll several times different things but same result in passive so I have the damage one too
I also face severe mana scarcity mana:1150
Pls advise I wanna be better

If all my stuff that I am selling is sold I'll have about 100k maybe a bit more I'll try merching too...

I really need to better my stats it's a shame am a war with 320damge