Hi guys

I need the help of a winning NL25/50/100 Zoom reg, that has a good understanding of today's online player pool. I seem to have huge problems when facing an opponent and not having HM2 stats, so I my hand reading sucks massively in some spots and I therefore make "mistakes".

To my background: I'm a winning O8 tournament player and I have no intention making any money on NL25 Zoom or sth. My goal is to "beat that game" and to get an understanding of the game, that is currently played.

My assumptions on NL25 Zoom are:
-15% VPIP 6max means that most people are quite nitty and nut-peddling
-they always have it in Showdowns
-Most people 3b for value, it's usually the best idea to 4b them with almost no bluffs
-Some people 3b a ton and with stuff like A6s/Q9s/56s. I can't know it before I've gone to showdown with them.
--> These 2 points cause a lot of problems in my game. When having AQ, I don't know if I'm facing the LAG or the nit. How am I continuing against a 3b with AQ? Should i fold?

Hand 1: I have AQ UTG (0.75$ open) and get 3b by MP to 2.25$. The flop is QsJs3c. The SPR is about 4.5.
->If I c/r this board, I only get called by better. Should I still do it against an unknown opponent in todays game? Cbets in 3b pots are almost 100%, aren't they?
->If I c/c, hands i beat will often shut down and hands that improve (6s7s~~) might catch their draw

In that hand, the turn blanked and he caught the As on the river, making a flush with 67ss (he 3barreled). This caused severe tilt as I didn't know what my "optimal line" would be against unknown opponents.

So what's your opinion, in general and in that hand specifically??
a) 4b/f pre more often
b) c/R/GII flop
c) c/ship turn blank
d) ??

Thanks ;)