Wikipedia has a page on the Timeline of the far future[1]. It lists a ton of physical and cosmological things that are predicted to happen based on our current understanding of physics. A really fun read that always takes me down a rabbit's hole of phenomena wikipedia pages. [1] https://en.wikipedia.org/wiki/Timeline_of_the_far_future
There's a video on that. The end of the universe: https://youtu.be/uD4izuDMUQA This is so weird to think that for most of its life the universe will be empty and cold. Like what's even the point of all this, of life, of us, if in the end nothing matters, everything decays into nothingness.
Whether life has meaning, whether it needs to have meaning, or even whether the meaning of life is predicated on influencing the universe is up to you to determine.
If you asked 10 philosophers and religious leaders about the meaning of life, you'd probably get 100 different answers ranging from "seeking knowledge", "enjoying life", "serving [god or supernatural force]", "making others happy", to "there is no meaning".