I will share one rule, which is great to convince your brain to stop whispering that "hmm, but you might call it". You know, this kind of knowledge you have, you know its true, but still for some reason find hard to follow it. Hopefully this will make it easier, for me it worked:
Dont choose between call/raise based on strength of your hand. Instead, choose between fold/raise based on whether you want or do not want to play the hand.
So thinking about 33 in terms of "well, lets limp to see the flop, I dont care that more people will limp behind me, because I play hit set/fold anyways" is flawed. Your thought process should be more along this line - "do I have plan for various alternatives when I play this hand? Will I feel comfortable to execute the plan? Or can this bring me to a difficult spot which I would rather like to avoid?". If you want to play the hand, why not to just raise it. If you dont, then you better just fold it.
Now it looks like this:
1, What is the action so far, my opponents and my position.
2, Does it make sense to play this hand in light of 1, ? If no, fold, if yes, go to 3,
3, Do I know how to play this hand? Do I trust my abilities that I can play it profitably? In other words, do I really want to play it? If no, fold, if yes, raise.
Obviously, call is still ok in various situations (namely in late pos when there was a lot of action before and you have a hand you dont want to fold, but in that case you have position and good hand, so sacrificing initiative is not such a big deal etc)
I hope it makes sense (and I hope Im not miles off here - I am beginner, too,most probably even fishier than OP ♦). To be honest, Im kind of putting it here to a test, to see if I understand it well.
Btw, another such wisdom, which helped me a lot would be - blinds do not belong to anyone. Its money in the middle like any other, and those, as you know, are no longer yours. So blind defense is nothing more than blind stealing from SB and BB position. Its just cheaper, thats all.