Resources to learn the technical details of SWE?

I originally graduated college with Mechanical Engineering. Had a few jobs around that field that I enjoyed but ultimately realized I love SWE and made a pivot into that career. I have a great job as a Senior Engineer that I enjoy, but I feel like I’m constantly trying to learn and understand technical details that (I perceive) I would have learned with a SWE degree. I’d love to get ahead of that and educate me one the technical basics of SWE. I know how to code, so I don’t need a coding bootcamp, but I want to learn more about web services, networking, database management, Docker utilization, and probably much more basic technical building blocks that I don’t realize I need to know. Does anyone have any recommendations for resources to learn about these things, and not just “learn to code” bootcamps?