You might be better off either 1. Resetting your character back to lvl 1 and trying to lvl up again as far as you can. 2. Leave that character at the lvl it is and play another character to as far as you can. 3. Patiently wait until someone opens up a group at your lvl and join them until you hit lvl 71.
I must warn you: once you do your master quest at lvl 71 the next round gets much more difficult since you can fight up to 3 monsters instead of the up to 2 that you are currently fighting.
You can also offset this by typing /set easy to go back to fighting 2 monsters.