If we have fold equity pre, I would 3b. If not, I would fold.

As played, definitely fold to the 3b. You're OOP, this isn't "a little loose", this is "very loose". In position, the call would still be "pretty loose".

As played, fold turn. On this particular turn card (Tx), even if turn goes check/check, I would be hesitant to fire a bluff on the river. His turn check-back range has a ton of calling hands that are pot controlling.