Mages can definitely feel a bit squishy at the lower levels compared to the other three classes but for the fact that you've made it to level 5 already and seem to have a decent point spread to build on, I'd say keep playing it as you've been going; you're doing okay.
I'd personally invest those couple of points you have in AWA and PER, just to give you an easier time spotting traps and advancing dialogue checks but as a tip for the former, pop your Mage Armour active whenever you think there might be hidden traps in your path and it'll protect you from the ones you don't spot/disarm successfully.
Talk to everyone and save lots, prioritise talking to and doing quests for other mage types, like wizards and the older loreseekers and you'll pick up more mage-related items than if you do Warriors Guild, for example.
Take heed of each of the individual summon types' strengths and weaknesses because while stronger in many ways than you are, they all have a vulnerability to a particular element that'll see them gone faster than you might be otherwise prepared for.
Have you picked up a companion yet? Finding the right one to suit your playstyle can turbocharge your progress through certain areas but picking up and following quests will lead you to all of them organically enough if you don't want to spoil the story as it's unfolded to you in game.
Have fun with it, however you progress.
