I havent got a single obstacle in 3 months

I ve being playing the past 3 months without a single obstacle spawning. I normaly wouldnt care that much but ive being wasting lot of gems i want my gems back. I know that special decorations doesnt count towards the obstacle limit. But anyways the whole bottom rows are shovelled. I ve even tried taking out all the shovelled and the limited decorations but it just wont work. Have anyone ever had the same issue? am i just being unlucky?

https://preview.redd.it/opkr25sh2z5d1.png?width=1762&format=png&auto=webp&s=7cf34d552d6753156cd4194d511c9c52f359eca4