Beginner Team question

I have the following team plus I have a lvl 39 2 star priest and a lvl 24 3 star warlock. What should be my team improvement in the next days? I have 6k gem so I Can buy another 5 star hero if needed. Currently I Am focusing on the Story (6-7 normál so far).
Thanks for the advices in advance!

Hi, thank you for reaching out. My best suggestion is to check the top player’s team and work towards that combination. Happy walking!