Guided games does work. However it's better near the beginning of the season when there is a fresh raid. No raids released lately and near the middle/end of this season, so probably not the best time. It's also better on weekend evenings. If the guided games timer says "unknown", then there may not be many teams hosting new players. Your best bet is to use LFG, have a mic so you can communicate. I try to join a group that is trying to help a friend or a Sherpa trying to help 5 new players. These are rare, but keep looking. Either watch a guide so you have an idea or go in blind and you better be good at taking directions, it's ok to make mistakes. Definitely don't join one that says kwtd, know what to do, unless you know what you're doing. I've beaten all the raids for the first time with lfg teams, so it's possible. If you like some of the people you play with, don't be afraid to send a friend request after a clear. These are solid players that can follow directions. Good luck and have fun.