How astute of you! 👏
Trials doesn't use Lobby Balancing.
Rewards don't scale with skill, so the only way to ensure that "good" players get more rewards than "bad" players is to use Random Matchmaking with Random team makeups.
Even so, if you dont have access to good players, it's still in your best interest to solo queue. If you have access to a good Trials team, it's in your best interest to play with them.