Nice tunes! I can actually relate to that description for "devoid of energy". For me the shoegaze/ambient and doom/sludge metal realms are two sides of the same coin. Slow and pensive - one creates atmospheres of floating in space with glassy tones and delays while the other creates thick and oppressive atmospheres that actually feel like treading in sludge through slow, low rhythmic chugging. Rather than hype me up, I get more trance like emotions - the latter which actually feeling needing to build up strength to push forward through sludge despite the oppressive atmosphere. Its fun 😁