No, you must also know what mods to roll on what maps. Each map has a certain set of 'best mods' for maximizing chances for sustaining the map runs. Running high level maps effectively requires a lot of game knowledge actually.
But the whole map-system, I hate it. Always this constant stress "will I find another map this run or not" when running maps worth 0.5-2ex. And then the rng on top of that, you can lose dozens and dozens of hard earned ex in a single day if rng hates you.
I just wan't to kill loads of monsters, not worry about my ex-reserves while running maps or being forced to run them in full parties for map-sustain & maximum lag.