My team always gets up against really good teams in the team battle. How do we get to play against..

It's random.

If you are the team leader you can follow these tips to improve your chances...

Make sure players are giving a certain amount of lives every week.

In my team It's 30.

If they are not, kick them out.

Change the entry level to over 4000. This will not remove anyone under that level, but it will entice more experienced players.

Make sure there's plenty of chat going on.

This makes team members feel invested in the team and more likely to put more effort in.

Never remove a member until the team battle is over or you will lose their achievements.

Unfortunately, this means screenshotting the whole teams 'helps' on a Sunday evening as they go to zero at midnight.

Hope this helps x