you Canadians need to stay here for a long weekend or something!

I just lost all my profits from yesterday and that includes getting it in KK vs. his AA 50bb deep. I flipped a shit when he showed the aces because I had been 3betting him all day and this was the perfect opportunity. I quickly said std in my head on the K high flop. Anyways, sets KILLED me today whether it meant I got one or villains did. Two hands back to back on a table where I had such a bad image I got AA and then KK and both villains and I were kind of spewing against each other and of course they both flop sets and bye bye stacks. Then some dude "floated" me with T8o and hit an 8 on turn and river came a J and I 3 barreled with K high and he snaps it. I'm beginning to realize how hard it is to give people ranges at 100nl when I am playing my game of like 30/25/12% 3bet. I like always seem to fuck up what level they are on. This is costing me a shitload and is making me consider running tighter though for some reason I think I am playing optimally but that's obv. not the case. I need to learn how to fold but never know WHEN.