First of all, guess u got a pretty bad timing of joining?/starting? On isen/rohan.
Like 1-2 weeks ago there was an level boost event, so u wouldnt be lv71 only.
Even so...
How u only got 2.5k HP? lol
Youre on isen. Guess youre using Chimera Armor Set and Chimera Weapon?
Coast 5kk & 5kk.
Which should give u more than 2.5k hp and u can stone it.
Via ItemMall u can get for example an 30day 50%HP stone for your weapon or %crit/absorb/agi/vit stones.
U can also get those stones ingame for crones if people selling it (or reach lv 90 an do PowerArena daily to buy those stones for free)
What accessories are u using?
Twins are rare these days since they are gone, get some friends and do the Dragon bosses whoch drop red mustache which gives agi and hp (if youre using...crap currently? )
Or join a guild and ask for help there.
And besides that...why did u choose to be a dhan?
They are hard to level solo on low level.
If u wanna stay on dhan i suggest to make a 2nd account, create a rumir, youll end up level 60(?) If u leave the turtorial zone and its a great party support for u. U got the rumir almighty and u can heal yourself.
Or throw all your plans away and start over with a better class