Hey there @FallenReaperQc! Welcome to the community! Many learning resources focus on getting something functional built more than digging into the nuance, as most learners are also just trying to develop their project. If you need more technical information, you can narrow the scope down to specifics and I can always help find more specialized resources. Some examples of slightly less surface level resources outside of documentation:
Networking Compendium by Cedric Neukirchen:
Mathew Wadstein explains how nodes work without digging into the source:
Tom Looman goes over game optimization and C++ a bit deeper than most tutorials:
Disclaimer: One or more of these links are unaffiliated with Epic Games. Epic Games is not liable for anything that may occur outside of this Unreal Engine domain. Please exercise your best judgment when following links outside of the forums.