Salam Neely, Even though "please" definitely means لو سمحت and من فضلك but it also means something else in Arabic. 1. Let's say you are asking someone to save you in a critical condition, in this case "please" means َأرجوك for a male, and أرجوكِ for a female. 2. In case you are using "please" as a polite gesture when asking for something, like in a restaurant for example and you want someone to pass the salt for you, "please" here would be different , and it means: "من فضلَك" for a male and "من فضلِك" for a female. Or you could use "لو سمحت" for a male and "لو سمحتِ" for a female. So it really depends on the context :)

Egyptian language we say for a male( لو سمحت) ,for a female (لو سمحتى). Arabic standard for a male ( من فضلك (مع فتح اللام اى وضع فتحة على اللام / for afamale (من فضلك (مع كسر اللام اى وضع كسرة تحت اللام .

من فَضلِكَ - for a male. من فَضلِكِ - for a female.

من فَضلِكَ - for a male. من فَضلِكِ - for a female. E.g. أعطِني الكتاب مِن فَضلك

Thanks a lot