Experienced electrical/engineer workers, what kind of jobs would be good for my skill set and experience? Advice on not getting screwed while getting back into a technical career?

Hello, I am trying to get some advice from experienced electricians and engineer workers on what jobs could be a good fit for my experience and skill sets. As well as advice on how to do a better job picking work that won't screw me over.

I am a nationally certified (NOCTI) Electromechanical Engineer. I got mentally/emotionally chewed up and spit out after working as a maintenance technician for a couple years as a young 'n dumb kid right out of school. I have kept my electrical skills sharp enough to wire up my own offgrid solar DC systems. I remember enough theory to do calculations and read schematics. My maintenance days have me somewhat familiar with electrical wiring, air duct systems, mechanical drives, pneumatic/hydraulic systems, PLC automation, and repairing broken parts with all manner of tools. I enjoy the feelings of satisfaction and capability that comes from successfully putting together and maintaining an efficient functioning system.

But im kind of scared to get back into the career field knowing how dangerous it can be (Ive mainly worked on 480v systems) and how little money I was paid before. On one hand I feel like I should use my highly technical skills and further a real career. However on the other hand every company i’ve ever worked for has screwed me over with promised training that never happened, severely understaffed stressed out maintenance teams who didn’t have the time or energy to spend teaching a newbie, and OSHA violations so egregious the inspectors were surely bribed.

I guess im trying to ask where I went wrong. What job paths are a better use of my skills that isn't so mentally and physically taxing? What are some red flags to look out for? What is contracting work like? Should I try to get into a union? I really don’t know if I want to get back into this career field and I don’t know if I want to commit to a 2 year apprenticeship contract.

Im kind of an environment guy who cares about clean energy and would love to be helping out the planet a little through my work sometimes I fantasize about working on solar arrays and renewable energy stuff.

Im pretty good with computers and IT, I use linux daily, can ssh into a remote server, port forward, and have set up some local services on my own network. I am a main developer of an open source project decently familiar with the basics of programming in lua and commiting with git. A lot of the older guys have appreciated my help navigating companies old poorly organized intranets for schematic scans and work orders.

I am in my mid 20s, single and from the US but willing to travel.