If it makes you feel any better, everyone hates tag team arena from what I can tell.

Unlike the classic arena, where the following only applies to platinum, in tag team each tier has a limited number of players. It's no problem to stay in bronze.

The only reason to do tag team is to get the free legendary hero, Drexthar. Make sure to buy fragments for him every day, there is a cooldown of 24h for buying them.

In addition to Drexthar there are a number of tag team quests you might try, if you get enough of them you can win a variety of additional prizes.  There seems to be little set standard for the opponents you get, all you can try is frequent resets and manage your tokens.

Best to stay in the lowest level, you can still do all the tasks.  If you move up the opponents get horrendous.

Tag Team Arena I set my defence teams to lvl 1 champions for easy kills by other players

That way I get to pick very easy fights  in return and complete  my dailies as well as collect gold  medals to spend  in Bazzare

Unfortunately, tag medals are required for progression missions.

To me, by far the worst part of 3v3 is just the sheer amount of time it takes. I simply do not have the patience to spend an hour or two a day just to go through all my tokens.

Thanks guys. Will take some of the advices and will set my defense low. Can't win in Bronze II and don't have the time to sit in front of the computer all day to reset.