How to make my team or warriors stronger?

You can makes the warriors stronger in various of way by possessing special frames, upgrading warrior's parts, breeding, fusion gaining more XP for your warriors through battles.

https://www.youtube.com/watch?v=yDZTs6btHEcwww.youtube.com

Other ways, check those videos to create a better team with useful tips:

https://www.youtube.com/watch?v=Yja-2VWap0Uwww.youtube.com

1 faction vs 3 factions

https://www.youtube.com/watch?v=ZCOKCU0l7rIwww.youtube.com

Same gem vs different gems