yes so instead of in game matchmaking use an app?
wow you never used the bungie app?
it's stupid easy and convenient. huge quality of life improvement.
there's a Fireteam tab, click on that and you can choose various activities (anything, crucible, gambit, nightfall, trials, raid) which will filter all available fireteam list. you can create your own or join one.
if you just want to join a fireteam, select the type of game you want, browse through the list, click on the one you like and hit join if there are open slots. if they deem you okay you'll get an invite. if not move on to another choice.
when you create a fireteam - put a title (Nightfall 100K, solar burn), select the event you want for filtering, how many people you are looking for (2 in this case) and then open the fireteam (you can even schedule it but I've never used that shit). people will browse through the list and join. you can review their profile and choose to send an invite or kick them out to look for another person (like if they are too low leveled for the event you are running). when you hit invite, the app will invite them in the game to join your fireteam (extremely useful when inviting 5 people for a raid). sometimes its buggy though cause you have to be in orbit and it doesn't shoot an invite at times so just invite them through a search in your PS4 or Xbox.
And that's it.
that's how I've been running all my nightfalls, raids and it's what i used to find people to get the worm catalyst and finish it. i look through the list before i make my own most of the time.
just download the destiny 2 bungie app dude. it allows you to shift gear from toon to toon which is a must if you are running with more than 1 toon.