Bungie,
You've lost a lot of your player-base over time, which is to be expected for some games, but not for a game of this scale.
More people would stick around if they could play more of the content, but so much of your player-base is solo. You have an abysmal percentage of total players who ever tried, let alone beat a Raid 1 time.
This is something that PSO2 solved 10 years ago.
Just add in audio and visual queues in lieu of requiring mic commands and it doesn't have to be for the hardest level of content, but at least the mid range stuff where actually useful gear and items drop.
Additionally add an active wait for raids/dungeons where you can still run around and do things.
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Just use the fireteam finder on the app. Matchmaking would be awful for pretty much every activity that doesn't currently have it.