r - Plot three graphs in one

I have three empirical distribution functions and I would like to plot these into one graph for an overview.
The x label should say 'Bedienzeit (s) and I would like different colors and a legend. Unfortunately all I am trying, does not really work well.

Could anyone of you tell me how to do this?

Thanks a lot!!

Daten <- read_excel("Input/Daten_ohne_Anton_Leonie.xlsx")
G_40_TmK_Alle_VP <- Daten$G_40_TmK
G_40_BmK_Alle_VP <- Daten$G_40_BmK
G_40_WoK_Alle_VP <- Daten$G_40_WoK


#ECDF TmK
G_40_TmK_Alle_VP_ECDF <- ecdf(G_40_TmK_Alle_VP)

#ECDF BmK
G_40_BmK_Alle_VP_ECDF <- ecdf(G_40_BmK_Alle_VP)

#ECDF WoK
G_40_WoK_Alle_VP_ECDF <- ecdf(G_40_WoK_Alle_VP)