In this tutorial I show you Doom-style keys! I am giving you this 
whole UE5 project to play with so you can see exactly how it all works! Annnnd My favorite UE5 feature so far, which is In-Level-Viewport Modelling!!! Woohoo!!! Rama
https://dev.epicgames.com/community/learning/tutorials/PWpG/unreal-engine-rama-code-doom-style-keys-in-level-viewport-3d-modelling-yes