"e.g." stands for "exempli gratia", which, in English, means "for example". Maybe dealing with core dumps or understanding how the JVM works hasn't been relevant to you, but for any competent (let alone "strong") engineer/programmer I'd expect them to have familiarity with a rough equivalent to those kinds of things for their own systems.
The contemporary world can be very isolating. Realizing that it's a systemic problem instead of an individual one is the first step to figuring out how you might go about finding something that will be personally meaningful. You might consider learning about meditation or joining a local yoga studio since that can be a good way to develop meta-cognitive skills to deal with feelings of isolation. It won't solve the systemic problems, that requires large scale cooperation and political effort, but it will help you get through a rough patch and give you time to think how you might contribute to solving the larger systemic issues.
