Here are a few areas of possible water entry,,
Door seals, water is flowing down door seals and seeping into car.
Window seals, same as door seals.
Side mirror, water leaking past seal, weeping down side of door panel onto floor.
Fresh air vent seal on duct door inside hood cowl is allowing water to enter and accumulate and drip on floor.
Do you have a sunroof ? Sunroof seal or drain tube leaking.