It's always the same.
"Find a group...right." Most can't or do not want to spend hours waiting.
"Get gud, noob." So much help that is. Not. Skip those comments quickly.
"Get better gear." <-- That at least is somewhat helpful. Several websites offer advice on that.
Some advice. (Feel free to skip)
First thing is to review one or several of the videos describing the strike and what it takes to do them. Several are offered online. Some will give an idea of good characters that do well, their armor and weapons.
Compare and update your characters that you intend to use. Then look into instanced combat events to see if you can do well. That is, try them. For some players, even the best characters, armor and weapons aren't going to be enough. You have to learn to play that character...really well. Practice in PvP or WvW, even against good vets or champs in open world. You have to know the keyboard and be able to hit those keys unerringly. That is difficult for some, but not impossible if you practice.
Lastly, while waiting and looking for a group is painful, it's necessary. While some content may be done by less than the number of players recommended, those players are usually experienced with that content. Having a group with less than the recommended numbers and inexperienced players is usually suicide. It will give you an idea of what 'NOT' to do if you watch and learn. Still, mostly a waste of your time and theirs.
Good luck!