Are 1 or 2 button builds still possible?

For Warriors Aftershock Totems or Sunder Totems is pretty much one button and does quite well endgame.

Earthshatter Warbringer is really fun and is basically two buttons : Earthshatter slam once or twice, Infernal Cry to shatter the spikes, rinse repeat. No warcry cooldown on this ascendency.

my first character was a deadeye Lighting arrow + lightning rod and i only ever pressed more than those two buttons at bosses for things like voltaic mark. My second character i played a warbringer shockwave totem(followed a build in the forum) and that was literally one button and i was just running around looting otherwise. I'm now on my third character I leveling playing orb of storm + flame wall + spark so three buttons and now it is an autobomber after i switched my ascendancy tree at level 90 so literally just hitting space bar and clearing through maps.

open trade website -> upgrade gear is my recomendation if you feel like your character needs more power.

I’m having fun with a two button build: shield charge /resonating shield (w magma barrier). Only use these two skills plus a health or mana pot from time to time.

there are tons of one button builds in this game... e.g. comet