Cloud Run / ECS / App Engine open source alternative, Cloud costs a lot

I come from a background where I used bare metal machines, I constantly compare the pricing of bare metal with cloud instances, bare metal providers like contabo, hetzner could be 5-9x cheaper and also have predictable pricing than using huge cloud companies like AWS / GCP, Digital Ocean.

Although I understand the value from the big clouds when I am using managed services like pub/sub and databases, but most of my applications are stateless container images.

I tried to self host kubernetes and then set up a load balancer, It was a nightmare and complicated setup.

I always wonder if there is an open source alternative to cloud run that you can easily install it in your infrastructure that’s also security / privacy compliant. Is it only me, or can you relate to this problem?

Cloud Run: https://cloud.google.com/run