What arrows are you using bud?

You're not alone, I've got an extremely strong team for my level and I've been getting it handed to me by some far weaker teams lately.
It's just a bad run of form, we all get bad results, stick with it and I'm sure you're team will come good.

As Cat said, you also need to look more closely at your team, are you leaking goals? If so it may be your defenders/GK at fault, or have you been misfiring? I've had periods where my 7* STs cannot seem to hit a barn door vs. 3* keepers.