There are many services that can back up your camera storage to the cloud to preserve your memories even if you lose access to your phone. They often offer paid plans with higher storage caps if you have a large amount of content you want to save.
These services also offer additional features such as facial recognition software to help you sort and organize your photos, or the ability to share your photos with friends and family. Additionally, many of these services will make a physical copy of your photos to ensure that they are not lost in the event of a data breach or natural disaster.