Need some advice on how to build good teams on server one, like what skills to pair with what, or just who are the best heroes and how should I decide who to put on a team with who? Most of my heroes are gold or red.
Look at challenger arena is my best advice
Also, Get into a guild that uses metas, and learn to manual. This will help you understand how heroes interact with each other better, and will give you hints on the best heroes
Ask your guild.
If they don’t know, get a better one.
In addition to joining a guild with competend players & looking through lineups in Challenger Arena (if you are able to), look at the lineups in war (offense & defense) & test them out