Your best moments are across many apps. How do you keep them?

How do your best moments end up lost?

I've been thinking about this a lot over the past two years because my best memories are often scattered everywhere. Google and Apple Photos do a decent job in showing me what was happening 2 years ago, but they don't see the full picture, because some moments are shared in other apps.

A funny video in a WhatsApp group. A photo your friend sent on iMessage. A voice note from my oldest son that my wife sent me two years ago. We are so used to sharing these memories on messaging/social channels but they are not build for you to go and find these moments easily.

Then months later, you want to find that moment, and it's just... gone. Which app, which chat was the memory in, and when you do find it, it's potentially gone, because you have changed your phone.

How do you deal with this? Do you have a system for preserving the moments that matter? Or does it feel impossible to keep up?

Curious how others are solving for this.