A little bit of help..
Did you know you can go to Lion’s Arch by going through the mists and go to any starting zone?
It might pay if you’re having trouble leveling to go to another earlier zone to get a couple of extra levels.
Also, are you using a short bow on your thief. Definitely, in my opinion, the easiest weapon to level with.
Make sure you’re upgrading your armor and your gear regularly. Have you thought about joining a guild. A great guild can make a big difference to your gaming experience.
https://forum-en.gw2archive.eu/forum/game/players/OMG-If-you-only-knew-this-tips-for-new-players
Read this.
Then go to other race starting zone to explore and get experience. To go to other race starting zone, click and enter heart of the mist( its the 2nd button from the right in your top left hand interface), then go to lion’s arch from the portal ( just run straight after u enter heart of the mist, u will see the portal)
After which u will end up in Lion’s arch, open the map and look for the place with 5 asura gates surrounding a waypoint…go there and enter one of the asura gate(choose one gate where the npc standing in front of it is not human), and u will reach the other race starting town. From there explore and find a way to go out to the pve area of that race
Your story will level you quite bit. Doing that, I didn’t need to go to other starting areas. In fact, the last time I leveled a character he was overleveled for areas. Part of that was probably the skill points from dailys they have now.