need some advice / help
For PvE, get Berserker’s gear. Technically you’d want to balance Assassin’s and Berserker’s gear depending on your build, but zerk will likely pull ahead in the next balance patch. If you have problems surviving, mix in some exotic Knight’s armor until you’re more familiar with what to dodge.
I’m not very familiar with WvW builds, but I know there are plenty of people who frequent this forum that can help you there.