skill doesnt matter at level 32, either i 1shot ambush you, or i need to blind/vanish/ambush again.
I also have a massive advantage while questing because im playing with a long time mage friend, who can root/slow them while i break melee range to build energy back up.
What i emplore the OP to do is to watch some vanilla 1v1 videos, At 60 you CAN 1 shot a mage in bgs, you can 1shot almost anyone if you have a large enough gear advantage, but alot of it is keeping them stunned, building CPs, and keeping thistle tea on you at all times to follow that kidney shot into 2-4 backstabs into a blind if they arent dead.
Rogues are the ballerinas of vanilla in Sub/Assa, and the evasion facetank in combat to hit you for a 1200-1600 eviscerate while maintaining Gouge/Kick/Blind/Cheap shot to stop any spellcaster from even being able to do anything.
You should watch some videos by HotNSweet on youtube, but remember, duels are the least favourable for rogues, youd rather wait for them to be in combat with a few mobs, low on mana, or while they are already trying to kill someone else to sneak in and have a massive upper hand.