The only rule that ever fucks with me is the two-pair rule.
ME: 7-6 Hearts
Opponent: Ace-8 offsuit
Flop comes: 2-7-6 Then A-2 on the river and turn
So Board: Reads 2-7-6-A-2
Now i had the monster hand of two pair throughought the round, but on the river the bard pairs and favors my opponent.
Oh well
I usually dont lose in poker that much.