Need friends

So, during the Halloween event, I realized many of my friends all have the same servants on support, Okita, Siegfried, Altera, and Mordred and I need a more diverse line up other than just relying on the same servants Mordred/Altera wave clear or Okita star gen. I’m not complaining that they’re bad but sometimes they don’t fit into the team like with the Da Vinci select quests onthe Halloween event. So I need some friend with Gawain or Saberlot to fill up the missing saber support,