What activities should I do for exotics and end game gear?

So I have close to 800 hours on the PlayStation with lots of maxed out builds, but recently picked up the ultimate edition on PC with the Brooklyn DLC (no cross progression so started a fresh agent) and so far after 50 hours all I am getting is garbage loot.

I mostly run heroic missions and do the campaign on heroic. The drops I am getting are not even mediocre decent. I’ve got two exotics so far, but not ready to run raids and other end game activities yet.

Is there a build that I can quickly get to be effective in missions or should I just be farming and leaving it to RNG? Surprisingly running the same missions on the console gives me better gear with lots of god rolls maxed stats and considering switching back to console.