Knowing this stuff is fine but make sure to keep your goals in mind. If the idea is to get a job, figuring out how Bluetooth works isn’t going to get you anywhere. You need to move in the direction the wider industry is moving. That direction is running containers in kubernetes.
If you can stand up a kube cluster, write a Prometheus exporter in go, scale pods based on those metrics, and auto resize workloads’ resource requests, then you should be able to find a job without much trouble… These are the things ops people are expected to do in 2023.
EDIT: The CNCF is a great resource for modern tooling.