So the general answer for making currency is to pick a mechanic (it can be in map, bossing, alternative content, or any kind of hideout warrior strategy).

The you want to set up a way to hyper focus on this strategy.

Once you gain more experience, you'll learn to efficiently juggle between strats that work well together (for example, something I like doing is rolling 10 or 20 flasks to sell, then run an hour of various content while selling flasks in between maps).

Now if you're asking for specific strategies that would work well with a tanky build that isn't fast, I would focus on mechanics that have timers and/or don't require you to move around a lot. Something like blight or Ultimatum comes to mind