Bad Day or Just Bad game ?? seeking some wisdom

Trying to move up the table limits and play while learning and understanding the game. started off at .50 - $1 tables did 10,219 hands with a 2.17 BB/100. So moved up to 1-2 tables and after 4877 hands had a 1.81 BB/100.

Have read about finding the loose games and attack those. well yesterday on Pokerstars found a 1-2 game that was avg pot $34 and had a 68% players seeing flop. So here i go.

Well needless to say I quickly lost the most of my 1-2 profits in this game. River cards cost me dearly. Was in lead till then. Played 9 hands and lost dealy, 7 on river, 1 on turn and one i lost set over set on flop that I guess i should of recognized.

I left the game demorlized and upset. In my heart I truly think I played the hands correctly except for one and just had a bad day. My question is should I have stayed at this table of loose players and tried to regain the losses? I was not tired, but more along the lines of upset. That is why i initially left the game, I thought i was not mentally in the game anymore and thus most likely not play my best. but later on I began to rethink that the table was one that should have been beaten easily, and thus maybe walked away from a great game.

For those who have played in those type games and taken a beating, is it better to play or leave ?

Thank you for any wisdom and guidance

Colonel