At low stakes I recommend 3-betting for value. Maybe open up and 3-bet a depolarized range once you're solid postflop. They're gonna call with garbage often like suited connectors/small PP/sooted aces/sooted broadways, and will call you down light OTF. So imo 3-betting a polarized range isn't that great. Better to 3-bet polarized if your opponents play a 4-bet or fold game, which is not really that common.
Yeah, I'm only set-mining if I'm getting good odds
from the blinds or OTB since we'll be closing or near closing the action. Gettong squeezed is annoying, and we lose our preflop investment.