Don't worry, you have enough new blood in division 4 to welcome them in the competition with a hard lesson Just kidding... Don't worry about being the current state of your team. I was the only team in the first season that didn't lose a single game during the whole season. And look at me now - I can't get promoted to division 2.

You never know what new season brings. 2 seasons ago I had one of the worst seasons ever, with only 1 win, just to win promotion in the next season. And I could go down once again. 

Positive thing in your situation is that you have only one way to go and that is up I wouldn't worry in your place, we are all playing for fun here, and better predictions will come with more experience (but who am I to give advice, my knowledge of sports is pretty bad so I am in similar situation as you )