"I just don't have the energy I used to. Why can't I do as much as I did in the past?"

My dude, friend, old buddy, pal...
We are -literally- living in some of the most difficult times we have seen in "recent" history.

We face regular existential crisis among countless other issues with meeting the most basic of needs.

Honestly that you are still here is a tribute to how resilient you are. Don't gaslight yourself, it's a mess out there. But there is room still for hope too.