RNG is not your friend (random number god). TE has troll results as in somebody with 10-15 more quality can loose. When I just started this game my friend invited me to a friendly match. He was 3 levels above me and he only won 3-1. My team at that time was 13 quality and he was something like 30-34.
If you would play against the same opponent you would propably have 8 out of 10 times better results. However, check your players ratings. If they are like 4-5-6 and they stay that way then sell them. Bad form is killing and is way more important then quality if you ask me.