Needing help with exhibition quest

Hi I am entirely f2p player and kind of having problems with clearing the remaining exhibition quests. So far I have only cleared three and is having problems with the sumanai fight and shishou fight. I dont have that many active friends with white rose CE so its kinda difficult. I actually need someone with an Emiya or okita with white rose CE to chees the fight. My friend Code is
419,321,968

Thanks in advance