3betting light from the button works more than 3betting from the blinds because everyone knows people 3bet light in the blinds and people can call more because they're IP, 3betting light occasionally against MP and CO opens on the BTN, is real good.
Not 3betting QQ+ AK against most people, is honestly, losing so so much money. You might think you can make more money by just calling but this is just not gonna be true against 95% of opponents.
You should just play really tight in the blinds at this level imo, You're in the worst position of the table postflop, which sucks and if you're calling with pretty hands like 89s etc you're just gonna get in lots of crap spots where you hit a weak draw or pair and end up investing lots of money/getting into tricky spots all to win 1.5bb, just play tight, im sure it will work out better.