I'm on PC so I can't comment on XB1. But in PC, it depends on what difficulty you want to play. You can always find games in routine and threatening. You can often find perilous games. But nightmare and above are less likely. The game took a hit since MEA just came out but there are still some players left. This is all assuming you aren't in some low populated region like New Zealand since region lock is a thing in this game.
Although the game is geared towards 4 players for the best experience, you can do really well with just 2 players.
Nug and I get EXP in the high 90k's with only the two of us playing Arcane Warriors (until more people log in that play DAMP)
I have a friendlist of 63 people that still play DAMP on the PS4, so just build up a list of people over time. I am certain enough people are still playing but public games are not the best way to go at this stage in the games life cycle.
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