You're having bad luck.
You can press Y before joining a room to see all of its members and their HR.
I suggest not hunting with low rank players who have armor and weapons that seem a lot more superior than yours. You see, people have discovered a way to make their own custom quests, like fighting Ukanlos and Akantor at the same time! However, people are abusing the power by creating quests like "Deliver 1 Potion" that has 99 of everything someone in G rank would ever need inside the blue supply box, and upon completion of such quests, one usually levels up instantly to HR 999 (as one can edit how many Hunter rank points you can receive at the end of the quest). Therefore, keep a sharp eye and be wary of anything suspicious. I advise that you learn all the names of the quests of your current HR as well as event quests (people can name their Custom quests and they may seem official, so be careful). I suggest refusing to partake in any quest that is any HR level above yours (in game a level HR7 can host a HR7 quest for a HR4 Hunter, but since you lack access to the official names of such quests, it is suggested not to partake in such quests).
This abuse has led to some HR1 hunters with fully maxed out end game gear and weapons.
So just be careful and safe when playing online, and if accidentally catch yourself in a suspicious quest, abandon if possible and DO NOT SAVE after the quest until you can make certain nothing was tampered with. If anything is changed, turn off without saving (no worries, after every quest you can choose to save your game).
Please don't try to take advantage of Custom Quests and please try to earn everything legitimately.
-Alternis
Ended up getting a half decent Netherblade out of it too. Either way good hunts, I always enjoy playing with ya Lazy.