My forecast is forecasting into the negatives :(

Hello everyone,

I haven't dealt with this situation in my years, but now I need help from the community.

I am trying to do a 3 yr. forecast for deal counts, but in this case the forecast plunges towards the negatives, it can't be

I have the seasonality on 4 to represent the quarter cycle, etc.

Can someone be my second pair of eyes and see what i need to do?

I searched online and some say to use the solver add-in. but the