Sing, I finished THE RESTAURANT season 1. It was certainly not predictable.
The series is still available, as I suspected, but is no longer free. $2.99/episode or $19.99 for the season isn't cheap, IMHO. But you can subscribe to Sundance Now for $6.99/mo and watch it, which I think is done through Amazon. I don't know what else is on Sundance Now.
Also, I read an article that says that after S1 you should skip to S4, titled THE RESTAURANT: 1951, before going to S2. S2 and S3 take place after 1951.