Team compositions

Zhuge Liang + X + Waver
Fill X with whoever you want
Edit : i think you should for some below servants :
- Herc, Fran
- Hassan of Senity : I just reread her skill, very good boss controller or Hassan of Curse Arm
- Waver
- FSN Cu
- Ushiwakamaru
- Ishtar
- Ceaser
They are all in top tier of their rarity

I would focus on george,Anderson,Ishtar,Hercules.zhuang Liang,Medea,ushiwakamaru,Caesar

I personally found leveling up the skills of isthtar the easiest and can charge np to 100% with just a 50% boost np charge ce which come with additional effects,I would use holy night supper on her.Caesar is a decent Saber and provides a crit boost and stars to the team,not many savers are st so I recommend investing in him.zhuang Liang has been my mvp since I got him and just is amazing so invest all your pages in him first.ushi has a decent skill set and her first skill will get a quick boost soon with st np.Finally hercs has amazing survivability and damage and can solo much content in part 1 of the story.

I get the impression that you are pretty new to the game so i recommend investing in Ishtar first which would help in farming alot

Uhoh most of the materials for Ishtar is from Camelot so if u have trouble with it I used Zhuang Liang and support Chloe with Hans and battle suit mystic code to defeat Gawain

Leveling priority:ishtar(until cannot),Zhuang Liang,Hercules,Hans...

Prioritize Ishtar, Herc and Waver. If you are a new player, you don't have to worry much on team composition since Waver and Herc alone can carry you through the most part. Focus on one servant at a time for leveling, you don't have to level all of them at the same time.

Ishtar and Herc work well since they are buster oriented, and Waver is there for the support buffs. Once you have at least have those three on third ascension, level Arash, Kiyohime and Fran since they will be vital to farming. Don't forget to level Mash since she is a great support.