How to manually farm XP easy on Halo MCC in 2022

Firefight Doubles on Halo Reach gives the most XP compared to ODST.
Skirmigeddon and Gruntpocalypse give the most performance XP I find.
Crashsite is great too. Score Attack gives less xp unfortunately because only 100 enemies spawn opposed to 120 like on the other playlists.
You can get a maximum of 38k performance XP if you play your cards right

[@mctruckered7154]

will this level me up fast in solos?

[@Joe-dw8kr]

No

[@BlitzAce13]

It's not exactly a black and white answer lol. It depends what level you are and how far you've progressed. I could farm over a million XP a day just doing Firefight Doubles solo. It all depends how hard you're willing to grind for it. It's still more consistent XP compared to playing PVP.

[@dashofeverything]

I don’t understand, is the best method firefight co op or something else?