u always look at super small sample sizes and make conclusions.
stop that.
This.
The reason you lost a few buy-ins wasn't that you played Suited Connectors and small pairs too much, it simply was that you put your whole stack in with the second best hand the majority of time. The hand examples you posted in the "Why?" thread told the whole story. In the first hand, you shoved JJ on the TT2 board facing a minraise (Yes, a minraise!!). At that point you can beat nothing but a bluff. If you're up against half competent players there's no way they can raise 33-99 for value there. You'll probably be facing higher overpairs at the very least.
And you always seem to go on tilt even on the slighest resemblance of downswings, which then lead you to make all kinds of change to your play. I still remember the thread where you started folding AK and AQ and the like because you always missed the flop with them! Well I know you have learnt a lot since then but the way you're playing right now, raise/fold poker, dropping Suited Connectors and small medium pairs isn't going to get you very far. There are a lot of circumstances where calling preflop raise instead of 3-betting can be right, e.g. when you have speculative hands in position as 3-betting open yourself to him 4-betting back when he has a monster, denying you the chance to see a cheap flop. Just calling preflop raise with AA,KK, or even AK works too if you know there are squeeze happy players in the blinds, as you can turn the table back on them when they squeeze.
You have read a lot about the game, so put that to good use and stop becoming so result-oriented over a small sample size. Build your BR to about $125, then take another shot at 5NL.
GL at the tables