Welcome, mate, took a long time to find Ryzom

We were luckier (old farstarian here).
First buy a player made weapon, they are better than anythign you get at birth. It will make a world of difference. Then keep your sys info window always open to see the resists of the mob your fighting with.
I have noticed too thate 'weany <mobname>' were the toughest on newbie island, they also give some more xp. He might be just enough levels over you so that you miss it at lvl 7, but they can also be particularly resistant to slashing and be more sensible to magic, finally there s a possibility you got unlucky and it blinded you each time you tried.
However don't give up! If you cannot kill the doggie go back to some caprynis, birds, goaris, etc. If you're an old SWG-er you migth remember how hard was to kill those darn frogs around Eisley in the first days. This is still a game where you have no chance to master a proffession in less than a month, so prepare for a very slow pace advance while taking time to notice details around you
If still have problems feel free to give me a tell, I could join you with a char on newbie island and see what we can do together

Or check the link in my sign, we asked each others lots of such questions when we were newbies and some old solutions still lie there.