What can a senior desktop support tech do who is burned out?

I am wondering what kind of career moves I have available to me because I am over the bullshit of desktop support. I have been brushing up on my Linux skills, learning docker, and doing a whole bunch of networking-related things. At this point, I am 46 years old. Would it benefit me to go back to school to learn a skill to help me advance beyond this role? I just don't know what to do. There are many options, none of them truly low cost and all of them involving a significant amount of risk.

I get that there is no avoiding risk when making a career change so late in life. I was looking at training for Java or Oracle and it isn't cheap. Maybe given my experience I could teach A+ or Network+? I don't know. I'll welcome any ideas right now.