Your evaluation reminds me of what King Solomon wrote in the book of Ecclesiaties. All is vanity.
I have found that being religious does not satisfy, but having a relationship with God, and helping others does have value, and can give one peace and joy.
Maybe you’ve heard this thousands of times, but it is true for me who is in his 60’s. I’m not doing anything great or heroic, but those who I help feed once a month always seem glad to see me.
I will leave this World with nothing like I entered it, but if I’ve made a few others lives better… I can live with that, and face another day.